When I restore a session that has multiple windows, each with multiple tabs, only the first window has a "normal" tab bar. The "normal" tab bar includes all open tabs, with the 'open new tab' button on the right. All other "restored" windows have an abnormal tab bar: the first "tab" (leftmost tab from before restore) is not shown in the tab bar but is still shown in the ctrl-tab cycle, and the 'open new tab' button is on the far left. All my tabs are there (if I look for them), but the tab bar is all screwy. Why is this happening, and what can I do to prevent it? NOTE: this only happens after a crash (sometimes), or when I force-crash Firefox (always).