Here are the 9 current labels used to triage issues on GitHub:
bug
crash
design
easy-task
feature request
language-support
performance
portability
RFC
I would suggest a new UI GitHub label dedicated to user-interface issues. Here are a few threads that could benefit from this:
Odd font rendering
Face attributes on double width characters don’t work
additional modeline-like area?
strikethrough face attribute
Menu / info should be the same ui element
Consider retiring the ncurses_wheel_up_button and ncurses_wheel_down_button UI options
Switch away from ncurses to terminfo-based input handling
Menus don’t get automatically resized anymore
Indentation guides
Support large strings in info box
Info box is not sized correctly when tab characters are inserted
Separate ncurses title from mode line
Configurable delay for info prompt
Cannot scroll with the mouse-wheel while selecting text
Scroll bar and Information area is broken with cjk-width
Allow displaying several info boxes at once
Display one completion candidate per line