Tear off menu by dragging caption

Thank you, Yuri. That's what I really like to see - the issue immediately recognised and an intent to resolve it.

Actually, the real issue for me is to restore the torn-off menus to non-torn-off state, and to prevent any future tearing off, as the 'drag the caption to tear off' option doesn't work on my system, so that it is permanently turned on, while I want it very definitely 'off'.

So, how can I restore the torn-off menus to non-torn-off state? That would be the big first step for me. And then I'd need the option to disable tearing off to actually work! --Many thanks.