Wow, I am surprised users critisize open source software so much for minor things that work different then what they are used to. Much appreciation for the devs of Gimp from my side.
Did anyone notice how hard they are working on color management and how few other software packages do that right? We are about to getting a free-to-use image manipulator with professional featues. If you complain about the UI, mod it or support the devs to improve it. That is the benefit of FLOSS. If you saved a .xcf by accident, you can download/build GIMP and convert the file to any supported format even in 50 years. No data lost.