toolbox icons lost their colors
The toolbox icons that were nice and colorful in previous Gimp versions lost their colors in the newest versions (I'm using 2.10.12). Now they look pale, like deactivated, and they are hardly distinguishable.
This bug has already been described here: https://forums.funtoo.org/topic/1494-gimp-icons-are-all-gray/
The solution suggested there does not work for me (all of the 4 available themes have the same problem), and I don't see any reason why any theme should have pale, unrecognizable icons.