FWIW. My opinion, if you only have that as a jpeg image then back to an earlier version.
How it happened? Only you can really answer that. Never heard of the zoom tool having that effect.
Start keeping intermediate versions as new layers in a Gimp .xcf file, and save often. It will be a big file but when finished then you can export the result as a jpeg.
How it happened? Only you can really answer that. Never heard of the zoom tool having that effect.
Start keeping intermediate versions as new layers in a Gimp .xcf file, and save often. It will be a big file but when finished then you can export the result as a jpeg.