GIMP thumbnails?
I've been using digikam for a while. My primary editing tool is Affinity Photo, and digikam doesn't show thumbnails for those files. I can accept that; Affinity is a commercial application that's not the mainstream choice.
Now I've started playing with GIMP. I thought that, since GIMP is also open source and its data files are documented (which a commercial product's files might not be), digikam would show thumbnails for those files. It doesn't; instead, it has a little green mountain symbol.
Is there a config setting I'm not aware of, or does digikam not show thumbnails for anything other than tiff and jpeg?