[Bug: ToDo List] Tear-off and Pin functions

Version 5.6
FYI, that bug happens inside Standalone Taskbar.
I have not tested it on elsewhere.

I've reproduced the bug, thank you.

One note: Pin feature just make menu unmovable. To make the tear off menu appear after restart you have to right-click the menu button and turn on the option Appearance->Load on Startup. But currently this works for first level menus only.