[REG] Undocking QDockWidget with drag misplaces it (a lot)

Have system with two monitors e.g like.
qtdiag.txt

Run the attached example: dockwidgetIssue.pro main.cpp

Notice that the dock widget moves a lot (and to the wrong screen) when dragged out.
2022-08-30 14-40-37.mp4

This appears to happen because the widgets "start" position is stored, but it is a local coordinate when it is
docked and is expected to be a global coordinate when moved as not docked.