I have the latest general public release. I noticed that when I clicked a certain spot on a window's title bar an dragged it back and forth between workspaces, the window gradually shifts from where I clicked it initially while dragging. after 10 or so workspace shifts, the window can move completely off of the cursor, even though it is still being dragged. The window usually shifts to the right.
Mass closure: This bug has been untouched for more than six years, and is not
obviously still valid. Please reopen this bug or file a new report if you continue to experience issues with current releases.