As per title, when I middle click in the title bar of several windows the window doesn't get moved to the next monitor.

It doesn't work with Chrome anymore for example, of with IDM (Internet Download Manager) but it still works with windows explorer folders.

And to add some more, even middle-clicking with the mouse on DF additional buttons in the title bar doesn't move the window to the next monitor. So it's not an issue with the title bar of the apps themselves.

After re-installing Beta 6 as I was advised in another topic this issue is now resolved, something must have gone wrong when I upgraded from 6.x.