Rated 3 out of 5 stars
MISSING TABS SOLUTION!!!
sorry for the caps, thought it was best as this solution is better than ScienceBrain's.
My tab bar is vertical.
1. Open a new tab.
2. click on the close button(the one at the bottom of the bar) and drag it(dont actually close the new tab). Drag the bar to the bottom middle of the browser and then the bar becomes horizontal.
3. When it is horizontal, you click and hold down on the left scroll button to let it take you all the way back to the first tab.
4. When you are at the first tab, drag the bar to the middle right/left of the browser(using the close button again). Then you can see all your tabs again.
This fixes the problem for that session. Restarting Firefox might mess up your tabs again. I hope to see a solid solution soon.
3 stars until this gets fixed. Then it would have 5 stars.