@MrIkso this check is great, but it might be very annoying to see it every time a project loaded or reloaded. Also, if user will go to settings and change editor font, warning may appear again, because it is unclear which characters not supported and what font support them.
Maybe we can collect all problematic characters and show them in editor within warning window, and add a font selection button to allow users to verify that a selected font is better. Or maybe automatically check all available fonts and show only better ones 🤣

@skylot

but it might be very annoying to see it every time

This check only works when deobfuscation is not used and renaming is disabled.

Maybe we can collect all problematic characters and show them in editor

I don't know, there are characters that no font can display. Also I don't know how long it would take to fully check the code, if it very bigger with all non-printing characters. As part of the optimization it only goes through once and if at least one non-printing character is found, everything stops and a warning is displayed.
The question is quite interesting.

but it might be very annoying to see it every time a project loaded or reloaded

Maybe we can collect all problematic characters and show them in editor within warning window, and add a font selection button to allow users to verify that a selected font is better

@skylot some improves