[Feature] Single window type mode with movable image windows.
Operating System: All
Add a Single Window mode (dockable toolbars, solid background) but with floating image windows (and optionally un-dockable tool tabs)
The description kind of says it all. Currently the single window mode forces switching between open images with tabs, which makes common scenarios like having multiple open images arranged on a display and editing impossible. I'll admit I was very confused when trying to drag tabs off the tab bar or right click them didn't work. It's standard for windows software to have some action associated there... Linux software too, last time I used it regularly at work roughly 10 years ago. When I was forced to use MacOS X at work for development I always used a regular wheel mouse and it worked as expected for the most part.
The other mode doesn't have this problem, but it does have the massive problem of following the old way Photoshop was laid out on MacOS. It makes switching the whole mess of tools between monitors quickly difficult, and adds the visual distraction of any shortcuts on the desktop showing between image windows and being accidentally clickable.
It's also just nice to have the toolbars fixed in place relative to something... Click targets are already tiny enough on high DPI monitors that 15/20 vision is needed to hit checkboxes, so you're stuck relying partly on muscle memory. DPI scaling doesn't work and without the windows theme being followed anyway, drag targets (for example to resize the panels / docks) are currently very hard to hit, and there's some bizarre lag between different mouse actions (click and drag often registers the click halfway through dragging something, as an example). These are all separate issues but if there isn't anything outside of gimp itself for the incorrect detection to register on it mitigates the issue a little.