If I close a fullscreen image, then reopen the image (tried through both Yazi and Dolphin) it will always open on my furthest left monitor. If the image is not fullscreen (just a normal floating window) then it opens on whatever monitor my mouse is on.
I have tried setting window rules for it to be forced onto my main monitor (the right hand monitor of a 2 screen setup) but it only applies to the floating window of Gwenview as the “Ignore requested geometry“ rule states that it does not effect fullscreen window states.
The expected behavior and what I would like, is for the fullscreen image to open on whatever monitor my mouse is on, just like every other application. Failing that at least forcing it to be on my primary monitor (the right hand one) would be better than nothing.