Summary: Dragging the title bar of the sidebar (eg. "Tinderbox") up and then releasing it causes the text (in this case, tinderbox's info) to flash repeatedly for about 1 sec. Steps to reproduce: (M10, Redhat Linux 6.0, KDE 1.2, Xfree3.3.5) start mozilla with sidebar open and tinderbox, What's related, and bookmarks. click and drag on the text "tinderbox", release it a little above the menu into the white background. What happens: The text "tinderbox" dissappears when you are dragging. (trivial) Major flickering occurs in the tinderbox window to a degree where it's unreadable for a second. (This is where it says.. "seamonkey as of ...") What should happen: A smooth transition.
Agreed, that this is a bug, but that UI has changed since M10, so this bug is not longer valid. Please pull down the latest nightly build and check out the new UI, much simpler, easier to use. Marking this bug as invalid, since the UI has changed.
verified with a nov. 8 build