Are you trying to put it near the right margin with the window maximized?.
Yes I'm trying to put near the right margin while the window is maximized.
I read the ticket and my experience is similar.
If I don't maximize the window, the toolbar will remain at the position where I placed it (as it should behave in fact).
Unfortunately your proposed workaround does not works in my case.
I make the C::B window as wide as I can. I place the toolbar near the right margin, and I save the perspective.
I maximize the window and close. When I reopen C::B, the window is maximized and the toolbar is not where I placed it.
If I double click the window title bar I can see that the non-maximized window size was reset (the dimension widened by me were not saved) and the toolbar does not fit in the reseted window size.