undo completely @%+!&s up editing

While editing larger images, upon pressing redo the app completely freezes for 10+ seconds then undoes many edits at once.
Redo doesnt do a damn thing after this and the image gets completely broken, losing whatever work one did with the image.
Ive used many image editing apps but this one i have to give 1/10.
I wish this crap didnt exist.
The annoying completely useless features it has like scrolling being insanely slow, asking every single time what to do with transparent parts of the image while it doesnt even have them...
Never remembering where last saved images were, and defaulting to the same folder every time one tries to save an image .... this disgusting app is completely outrageous. I wish distros never included it.
sudo apt purge drawing

No file, test, or entry point is identified. Start by reproducing the redo failure with a larger image and several edits, then verify that redo no longer freezes, batches edits, or damages the image; the report also mentions slow scrolling and save-folder behavior, which should be kept separate unless reproduction links them.

Written by the indexing model from the issue text.