I believe the "docked toolbar can't be undocked problem" only occurs
when the window in which it is docked is too narrow or too short.
I docked the Project toolbar vertically along the left side of the
main development window.  When I tried to undock it to move it somewhere
else, it wouldn't move.  I then resized the window taller, so that
the Toolbar Options menu has only Customize on it and was then able to
undock the toolbar and move it.