[Bug] v3.0.1 - Copy-pasting text within multi-line asset text boxes changes the text's appearance

[clockworkprince]

When I paste text into a multi-line textbox, the pasted text's font changes to the font settings I use for writing chapters and also applies the light mode text colour (meaning the text after pasting looks black, even though I always use night mode).

Screenshot:

(Circled text is the original text, rectangular border marked text is pasted.)

Some findings when testing out how to trigger this bug:

• This bug does not happen when pasting text within single-line textboxes from what I've tested, but I might've missed something.
• The bug does happen in light mode, but does not change the text colour to night mode.
• Curiously, the one way to prevent this bug is to copy text from single-line textboxes within Quoll; externally copied text from Notepad changes font properties, as does text copied from multi-line textboxes within Quoll.
• The bug does not happen if you edit an empty multi-line textbox and then paste the copied text immediately, so without typing anything before pasting. If there are any characters already in the textbox (even line breaks), the bug occurs.
• Saving the multi-line textbox's contents and then starting to edit it again has no effect on whether the bug occurs or not.