CTR 1.6.6

[locale(s)]

• (NEW) Dutch (nl) translation added (thanks to Tonnes)
• Japanese (ja) translation updated (thanks to mm_k)
• Spanish (es) translation updated (thanks to strel)
• Estonian (et) translation updated (thanks to Maidur)
• Slovenian (sl) translation updated (thanks to Klofutar)
• Polish (pl) translation updated (thanks to Mrere)

[fix(es)]

• Windows 10 & Compact themes: glitches with titlebar, tabs toolbar and min/max/close buttons
• Fx53+: 'tabs > page 3 > mockup option: text shadow glitch
• Fx54+: 'General ui > mov. back-forward button': glitch in some cases
• Fx55+: missing icons (Nightly 2017-05-04)
• Fx55+ & 'show version numbers in add-ons manager' option: missing 'LEGACY' warning
  (Note: 'hide warnings in add-ons manager' option always removes 'LEGACY' warning.)

[new option(s)]

• Tabs > Page 3 > additional close icon (icon from Igors QTTabBar skin)
• General UI > Page 5 > additional close icon (icon from Igors QTTabBar skin)
• Fx55+: General ui > page 4 > general ui animations (switch for 'toolkit.cosmeticAnimations.enabled')

[general change(s)]

• Fx55+: removed 'browser.tabs.animate' and 'browser.fullscreen.animate' switches

[add-on compatibility]

• Fx54+ & 'Classic Toolbar Buttons' add-on

Note
Mozilla removed default toolbar*.png files in Fiefox 55+. In order for some CTR features to run properly toolbar*.png files from pre-Fx55 builds had to be added to CTR. This slightly increased CTRs file size.

CTR 1.6.5

[locale(s)]

• Greek (el) translation updated (thanks to George M.)
• French (fr) translation updated (thanks to BlackJack)
• Upper Sorbian (hsb) translation updated (thanks to milupo)
• Lower Sorbian (dsb) translation updated (thanks to milupo)
• Chinese (zh-CN) translation updated (thanks to Cye3s)
• Spanish (es) translation updated (thanks to strel)
• Portuguese (pt-BR) translation updated (thanks to igorruckert)
• Russian (ru) translation updated (thanks to Alexei)
• Japanese (ja) translation updated (thanks to mm_k)
• Polish (pl-PL) translation updated (thanks to Mrere)
• Ukrainian (uk) translation updated (thanks to Sacredwheels)
• Slovenian (sl-SI) translation updated (thanks to Klofutar)

[fix(es)]

• Windows Classic visual styles: 'General ui > page 2 > alternative appearance for menu panel popups' option
• Windows Classic visual styles: missing cui button indicators (normal, small, icon, text...)
• location bar: always hide 'move to menu' and 'remove from toolbar' items from button context menu
• Fx50+:'options page in window' and options button: missing icon in palette
• Fx52+: options page: glitches with some option groups
• Fx52+: 'Location bar > Autocomplete popup > Aero Colors for highlighted results' option
• Fx54+: console errors with 'Location bar > Autocomplete popup > alt. appearance' option
• various other glitches

[new option(s)]

• Fx55+: Options page > Search bar (switch for 'browser.preferences.search') *
• Fx55+: Advanced > anti-fingerprinting protection (switch for 'privacy.resistFingerprinting') *

• both are switches for default browser preferences (CTR does not change anything)

[general change(s)]

• tweaks for 'General ui > page 2 > alternative appearance for menu panel popups' option (thanks to maxoku)
• internal changes for customize modes button indicators (normal, small, icon, text...)
• added label for palettes private mask indicator
• CTR prefwindow: info box about default browser preferences not being exported/imported by CTR
• 'Add-on manager > add-on lists: replace button labels with icons' option: HiDPI support
• 'Add-on manager > add-on lists: replace button labels with icons' option: different 'edit icon' for Stylish styles
• 'General UI > Page 2 > Alternative appearance for download progress bar' option: code tweaks
• moved 'findbar.modalHighlight' switch from 'Advanced' to 'General UI > Page 4'
• removed 'findbar.HighlightAll' switch (not needed anymore)

CTR 1.6.4

[locale(s)]

• Greek (el) translation updated (thanks to George M.)
• Chinese (zh-CN) translation updated (thanks to Cye3s)
• Polish (pl-PL) translation updated (thanks to Mrere)
• Upper Sorbian (hsb) translation updated (thanks to milupo)
• Lower Sorbian (dsb) translation updated (thanks to milupo)
• Chinese (zh-TW) translation updated (thanks to Shyayngs)
• Russian (ru) translation updated (thanks to Alexei)
• French (fr) translation updated (thanks to BlackJack)
• Spanish (es) translation updated (thanks to strel)
• Slovenian (sl-SI) translation updated (thanks to Klofutar)
• Japanese (ja) translation updated (thanks to mm_k)
• Portuguese (pt-BR) translation updated (thanks to igorruckert)
• Italian (it) translation updated (thanks to Styb)
• Czech (cs) translation updated (thanks to poljos)

[fix(es)]

• Fx52+ & old search & non-Aero themes: text color of item text above suggestions
• Fx53+ & ' Tabs > Appearance > Curved tabs (alt.) (Aero)' option: tab text glitch
• Fx54+ & Windows Classic visual style: missing separators
• Fx54+ & mov. back/forward buttons: 'reduce nav-bar height' option
• toolbar context menu & grayed out items "move to menu" and "remove from toolbar"

[new option(s)]

• Fx52+: General UI > Page 2 > Alternative appearance for download progress bar

[general change(s)]

• improved tab indicators for 'container tabs'
• unlocked more CTR settings for default "Compact Dark/Light" themes
• CTRs prefwindow: moved options, changed descriptions

[add-on compatibility]

• Blackfox/Lavafox themes & CTRs 'tabs not on top' glitch

CTR 1.6.3

[locale(s)]

• Portuguese (pt-BR) translation updated (thanks to igorruckert)
• Polish (pl-PL) translation updated (thanks to Mrere)
• Chinese (zh-CN) translation updated (thanks to Cye3s)
• Ukrainian (uk) translation updated (thanks to Sacredwheels)
• Spanish (es) translation updated (thanks to strel)
• French (fr) translation updated (thanks to BlackJack)
• Italian (it) translation updated (thanks to Styb)

[fix(es)]

• Fx54+ & 'location bar > page 3 > hide i-icon' option
• Fx54+ & 'location bar > Autocomplete popup > alternative appearance' option

[general change(s)]

• added movable mask indicator to palette (only visible on toolbars in private mode and in customizing mode)
• duplicated 'Search bar > page 1 > middle clicks...' option to control middle clicks on search glass
• code tweaks for 'Tabs > Page 2 > custom private new tab page' option

[add-on compatibility]

• 'Private tab' add-on & CTRs 'custom private new tab page' option

CTR 1.6.2

[locale(s)]

• Greek (el) translation updated (thanks to George M.)
• Upper Sorbian (hsb) translation updated (thanks to milupo)
• Lower Sorbian (dsb) translation updated (thanks to milupo)
• Russian (ru) translation updated (thanks to Alexei)
• Polish (pl-PL) translation updated (thanks to Mrere)
• Czech (cs) translation updated (thanks to poljos)
• Slovenian (sl-SI) translation updated (thanks to Klofutar)
• Portuguese (pt-BR) translation updated (thanks to igorruckert)

[fix(es)]

• Developer Theme & tabs not on top option: doubled line at tab toolbars bottom

[new option(s)]

• Fx52+ & Windows: Advanced > Old font rendering
  (sets "gfx.*.azure.backends" back to "direct2d1.1,cairo,skia")
• General UI > page 3 > Bookmarks menu button > Popup: hide 'Bookmarks Toolbar' menu

[general change(s)]

• CTRs prefwindow: minor fixes
• CTRs prefwindow: moved options, changed descriptions

[add-on compatibility]

• 'SearchWP' add-on & Fx51 & CTRs 'old search'
• 'Private tab' add-on & 'custom private new tab page' option

CTR 1.6.1

[locale(s)]

• French (fr) translation updated (thanks to BlackJack)
• Greek (el) translation updated (thanks to George M.)
• Chinese (zh-CN) translation updated (thanks to Cye3s)
• Spanish (es) translation updated (thanks to strel)
• Japanese (ja) translation updated (thanks to mm_k)
• Upper Sorbian (hsb) translation updated (thanks to milupo)
• Lower Sorbian (dsb) translation updated (thanks to milupo)
• Russian (ru) translation updated (thanks to Alexei)
• Estonian (et) translation updated (thanks to Maidur)
• Polish (pl-PL) translation updated (thanks to Mrere)
• Slovenian (sl-SI) translation updated (thanks to Klofutar)
• Ukrainian (uk) translation updated (thanks to Sacredwheels)

[fix(es)]

• 'Options page in window': font size in some menupopups
• 'Options page in window': size tweaks for 'Data choices' area
• Firefox 53+ & Windows & squared tabs (v1): tab color glitches
• Windows 10 & Personas & 'tabs not on top' options: semi-transparent toolbar glitch
• Developer Theme & movable back and forward buttons: identity box glitch
• Developer Theme & movable back and forward buttons: location bar glitch
• Developer Theme & some CTR options: restored visibility on CTRs prefwindow

[new option(s)]

• Fx53+: Tabs > page 1 > long tab titles: 'default' overflow effect or no effect (v1/v2)
• General UI > Page 3 > Bookmarks menu button popup: only show 'bookmarks this page' and bookmarks
• Firefox button > button color > custom: button color on private windows
• Tabs > Page 1 > Tab title position: left, centered, right
• Custom CSS > custom css (insert/apply own css code) (*1)

[general change(s)]

• Fx53+: support for 'Compact Dark' and ' Compact Light' themes
• Fx53+: replaced 'remove overflow effect from long tab titles' option with new option
• CTRs prefwindow: 'Support' button > versions page links to release and beta pages
• CTRs prefwindow: moved options, added/changed labels/descriptions
• CTRs prefwindow & macOS: tweaked prefwindows box sizes

[add-on compatibility]

• 'Private tab' add-on & 'custom private new tab page' option

(*1) Note: Custom CSS option is mainly for adding tiny code snippets to override CTR settings without installing other add-ons.
It is not a replacement for Stylish add-on or userchrome.css and usercontent.css files.

CTR 1.6.0.1

1.6.0.1
[locale(s)]

• French (fr) translation updated (thanks to BlackJack)

[fix(es)]

• Fx50/51 & "Location bar > AC popup > Remove 'Search with...' and 'Visit' items" option
• Tabs > Page 2 > New tab page url

Note
Looks like some experimental changes went online with 1.6.0beta9 and 1.6.0 final, although they should not have.

1.6.0
[locale(s)]

• Estonian (et) translation updated (thanks to Maidur)
• Slovenian (sl-SI) translation updated (thanks to Klofutar)
• Japanese (ja) translation updated (thanks to mm_k)
• Polish (pl-PL) translation updated (thanks to Mrere)
• Chinese (zh-CN) translation updated (thanks to Cye3s)
• Greek (el) translation updated (thanks to George M.)
• Upper Sorbian (hsb) translation updated (thanks to milupo)
• Lower Sorbian (dsb) translation updated (thanks to milupo)
• Russian (ru) translation updated (thanks to Alexei)
• Ukrainian (uk) translation updated (thanks to Sacredwheels)
• Danish (da-DK) translation updated (thanks to scootergrisen)
• Portuguese (pt-BR) translation updated (thanks to igorruckert)
• Chinese (zh-TW) translation updated (thanks to Shyayngs)

[fix(es)]

• Fx50+ & Win10 & 'movable back/forward buttons': identity icon glitch
• Fx50+ & Win10 & 'small button mode': identity icon glitch
• Fx50+ & WinXP & "Location bar > Autocomplete popup > Alt. appearance" option
• Fx50+ & "Location bar > custom border roundness' + 'identity box colors'": glitches
• Fx52+ & "Location bar > AC popup > Remove 'Search with...' and 'Visit' items" option

[new option(s)]

• Location bar > P2 > Dark background color
• Search bar > P1 > Dark background color
• Tabs > P1 > Tab loading animation: orange (known from Linux)
• Fx53+: Tabs > P1 > Remove overflow effect from long tab titles

[general change(s)]

• internal code tweaks
• reduce size of some 'tab loading animation' images
• expanded 'Options page > alt. appearance' options
• CTRs prefwindow: moved some options
• CTRs prefwindow: changed some labels

CTR v1.5.9

[locale(s)]

• Chinese (zh-CN) translation updated (thanks to Cye3s)
• French (fr) translation updated (thanks to BlackJack)
• Italian (it) translation updated (thanks to Styb)
• Greek (el) translation updated (thanks to George M.)
• Upper Sorbian (hsb) translation updated (thanks to milupo)
• Lower Sorbian (dsb) translation updated (thanks to milupo)
• Japanese (ja) translation updated (thanks to mm_k)
• Polish (pl-PL) translation updated (thanks to Mrere)
• Russian (ru) translation updated (thanks to Alexei)
• Slovenian (sl-SI) translation updated (thanks to Klofutar)
• Spanish (es) translation updated (thanks to strel)
• Estonian (et) translation updated (thanks to Maidur)

[fix(es)]

• icon+text modes and some toggle/action buttons: wrong icon size
• mov. back/forward buttons & small button mode: location bar glitch
• Windows Classic theme & 'General UI > P2 > Bookmarks... on toolbar: old appearance'
• Tabs > Page 2 > Reduce space above toolbar: glitches
• e10s + curved tabs: issues with 'custom tab colors' and 'aero colors' options
• Fx50+ & small button view: identity box on popup windows
• Fx50+ & mov. back/forward buttons: identity box on popup windows
• Fx50+ & Location bar >> Autocomplete popup > 'Alt. appearance': key events
• Fx51+ & custom tab colors: active tab failed to apply colors
• Fx51+ & customizing mode: missing icons and wrong icon colors
• Fx51+ & big icon mode: missing icons and wrong icon colors
• Win10 & tabs not on top v2: issues with 'caption buttons'

[new option(s)]

• Advanced > switch for 'about:config >> geo.enabled' preference

[general change(s)]

• HiDPI modes: hires icons for some close icon variations
• CTRs prefwindow: moved and reordered some options and categories
• split location/search bars width/roundness settings
• moved location bars width/roundness settings to location bar category
• moved search bars width/roundness settings to search bar category
• increased menu popup timings for 'WebDeveloper' menu popup within 'Firefox' buttons popup
• custom tab colors do not get disabled anymore once tab appearance changes
• Fx51+: moved and renamed 'Advanced >> Autocomplete popup search' to 'Location bar >> Autocomplete popup >> show search engines' (Search engines at popups bottom can now be optionally used with 'Alt. appearance' too.)

[add-on compatibility]

• 'Simple Add-on Manager' add-on & big icon / icon+text modes
• 'Tile Tabs' add-on & Windows: small button mode

CTR v1.5.8.1

1.5.8.1 (major hotfix release)

[locale(s)]

• Spanish (es) translation updated (thanks to strel)
• Japanese (ja) translation updated (thanks to mm_k)

[fix(es)]

• Fx50+ & 'Location bar (3) > Remove Search with... and Visit' items
• Fx52+ & big icon mode: missing icons
• Fx52+ & customization palette: missing icons
• Fx52+ & Location bar (3) > Autocomplete popup > 'Alt. appearance': not affecting all forms anymore
• Fx52+: improved compatibility of 'old search'
  -- switched to popup 'default search' uses
  -- removed not needed content from popup (one off search, header, icons...)
  -- the step was needed to keep compatibility with future Fx builds
• Win10 & 'Tabs (1) > Tabs not on top v2': caption buttons glitch
• full themes & some CTRs options: options were hidden
• Developer Edition theme & CTRs prefwindow
• Firefox button menu: 'Web Developer' menuitem issues

[new option(s)]

• Searchbar > Old search > open in new tab > 'exclude about:newtab'
• Searchbar > Old search > open in new tab > 'exclude about:blank'
• Searchbar > Old search > open in new tab > 'exclude about:home'

[add-on compatibility]

• Last Pass button & CTRs 'icons+text/text' modes
• TabMixPlus & Win 10 & multirow tabs & tabs not on top: active tab glitch

CTR v1.5.8

[locale(s)]

• Ukrainian (uk) translation updated (thanks to Sacredwheels)
• Greek (el) translation updated (thanks to George M.)
• Upper Sorbian (hsb) translation updated (thanks to milupo)
• Lower Sorbian (dsb) translation updated (thanks to milupo)
• French (fr) translation updated (thanks to BlackJack)
• Russian (ru) translation updated (thanks to Alexei)
• Slovenian (sl-SI) translation updated (thanks to Klofutar)
• Estonian (et) translation updated (thanks to Maidur)
• Chinese (zh-CN) translation updated (thanks to Cye3s)
• Polish (pl-PL) translation updated (thanks to Mrere)
• Italian (it) translation updated (thanks to Styb)
• Portuguese (pt-BR) translation updated (thanks to igorruckert)
• Spanish (es) translation updated (thanks to strel)
• Japanese (ja) translation updated (thanks to mm_k)
• Estonian (et) translation updated (thanks to Maidur)

[fix(es)]

• macOS & Tabs (1) > Tabs toolbar > 'reduce space above toolbar'
  -- does not override 'hide with only one visible tab' spaces anymore
• Toolbars (3) > 'Blue Aero colors for...': colorize findbar too
• Toolbars (3) > 'Blue Aero colors for...': add-on manager glitch
• Fx48+ & General Ui (1) > 'Replace generic favicon': autocomplete popup glitch
• Fx50 & Location bar (3) > Autocomplete popup > 'Alt. appearance': glitches
• Fx50+ & Location bar (3) > Autocomplete popup > 'Alt. appearance': click events
• Fx50+: Location bar (3) > "Remove 'Search with...' and 'Visit'" items
  -- fixed glitch when no item is visible inside popup anymore
  -- works without Location bar (3) > 'disable height limit' option
  -- works with default and CTRs 'alternative appearance' for autocomplete popup
• Fx52+: General UI (2) > Bookmarks menu button > 'Popup: panel menu appearance'

[new option(s)]

• Tabs (1) > Tab title in Firefox titlebar > 'Centered'
• Searchbar > Clear search box after search > 'delay'
• Searchbar > Revert to first search engine after search > 'delay'
• Location bar (3) > Autocomplete popup > 'Hide page title' (thanks to Cobinja)
• Toolbars (2) > Findbar > 'Findboxes width'

[general change(s)]

• tweaks for 'Tabs (1) > Tab title in Firefox titlebar' option
• macOS & Tabs (1) > Tabs toolbar > hide with only one visible tab'
  -- 'reduce space above toolbar' option has to be enabled, if tabs are on top, to reduce the gap above tabs toolbar
• tweaks for 'Tabs (1) > Tab title in Firefox titlebar' option
• minor tweaks for autocomplete popups results/items and
  -- Location bar (3) > Autocomplete popup > 'Alt. appearance' option
  -- Location bar (3) > Autocomplete popup > 'Aero colors for...' option
• preference window tweaks
• padding for Location bar (3) > Autocomplete popup > 'Aero colors for...'
• Add-ons page: alternative appearance is enabled by default now
• Options page: alternative appearance is enabled by default now

[add-on compatibility]

• 'Findbar tweak' & Toolbars (2) > Findbar > 'Findboxes width' option