Display numbering mismatch between System Settings and BetterDisplay?

[designorant]

The Layout Protection seems to have the orientation reversed.

I have two external displays: LG UltraFine (1) & LG UltraFine (2). They sit right next to each other above my laptop. To achieve layout as on the Arrange Displays window, so (1) is on the left and 2 is on the right, I would expect BetterDisplay to say: Position of LG UltraFine 1: <- Left of LG UltraFine 2.

However, in order to achieve the layout I'm after I must select: -> Right of LG UltraFine 2.

Please see a fairly self-explanatory image:

It's a one-off thing, but a bug nevertheless.

[waydabber]

Ok, the problem is that the numbering (1) and (2) in System Settings is not actually part of the display name, it's just something System Settings attached after the name, much like how BetterDisplay attaches numbers after the names of displays with the same name. Sometimes these randomly attached numbers (in order of detection) don't match up between the two. That's what causing the issue. If the displays are otherwise not confused by the system regularly, you can simply rename them as UltraFine Left and UltraFine Right in BetterDisplay (under Settings/Displays/display/Additional settings.../Custom display name).

[waydabber]

(note: if the displays are regularly confused by macOS - no way for the system to reliably tell them apart due to all identifiers being the same -, then you might have a deeper problem with the config which needs a different approach).