GIMP GUI is a bug
Operating System: All
Description of the feature
Your GUI is a bug. Please stop implementing new features and redesign your GUI from scratch (if you want people to use your software). I use several graphics, video and photography applications and never need to read manuals or google stuff, at least for basic features. GIMP is completely counterintuitive, even for simple tasks. The user experience is so terrible that I think you should apply for the IgNobel prize.
Use cases
A person trying to use GIMP.