Firefox Problems 2: Foxes Undead

[lutzj]

When I use Firefox on my Vista computer, there is a large white bar at the bottom of my screen for some unknown reason. It's not part of the window either, it's under the status bar. I might not mind except for the fact that it takes up valuable (on this laptop) screen space and it may be malware of some kind.

Here's a picture:

 

[GVBN]

It could be some extension incompatibility. Try starting Firefox in safe mode

 

[lutzj]

It works in Safe Mode, but I can't figure out which addon is causing it. I've already tried disabling them, one at a time, but can't get any results. When I switched to different themes, one or two of them had patterns in the bar.

 

[lutzj]

Found it! A third-party password manager was the culprit. Thanks GVBN.