My bookmark "sub" folders are off to the right side of my screen and I can't see them. They used to automatically flip over to a visible portion of the screen but no longer do so.

It used to be that if a particular bookmark folder filled the right side of the screen, the contained bookmarks would show on the left, or vice-a-versa. Now, My primary folder takes up the right half of the screen, and the contained bookmarks are even further to the right side and completely off of my screen; can't even see them.