When I make any change in gwenview, just now I rotated a picture because the camera had been held 90 degrees off upright, the save bar thing appears and cannot be gotten rid of. It wastes space and forces the image to zoom out even more.

The horizontal bar style is a particularly poor design choice, since the rise of widescreen vertical pixels are at a premium. It makes sense if you want to drive the market (ie sales) then stupid UIs should be put out to waste resources, but I thought this was about being the best? Not the least worst, whilst following current GUI fads.

Also, the GUI is still horrible and animated in places even when all animations are off in the preferences.
v2.8.5, according to about Gwenview

Reproducible: Always

Steps to Reproduce:
1. open file
2. change it
3. get rid of prompt bar thing by not pressing undo or a save button

Actual Results:  
no way to get rid of the bar whilst doing what I want. If I undo, then the UI animates, not as per settings.

Expected Results:  
don't prompt the user like they have never used a computer before. An asterisk on the title bar works, and a prompt if the program is exited with unsaved documents.