It seems that MotionBox implements the logic of window movement by itself (tested on Linux + KDE). But there are several problems with this implementation:
The window refuses to go through screen borders or panels. This creates two (likely) unintended side effects: The first is that on a multi-monitor setup, you can't move the window on any other monitor besides the default one. The second one is that due to the window often taking up the whole area of the screen even in non-maximized form, it's often difficult to move the window.
Edge snapping and other niceties simply refuse to work, which is somewhat frustrating.
The solution is obvious. Don't bother with implementing this logic and let the window behave like a proper window.
It seems that MotionBox implements the logic of window movement by itself (tested on Linux + KDE). But there are several problems with this implementation:
The solution is obvious. Don't bother with implementing this logic and let the window behave like a proper window.