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The + sign to open a new tab is missing
FF4. Suddenly the + to the right of an open tab is missing. When I start FF in the safe mode it reappears. I started FF in the normal mode and disabled my seven extensions and one theme, one-by-one, but the + did not reappear.
I had not added any new extensions, plug-ins or appearance themes before this happened.
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I have enabled all my extensions, plug-ins and appearance theme. The + sign is now visible and when I click on it a new tab opens.
However, the bookmarks clickable link in the right upper corner is gone and when I restore it using the customization option the new tab + sign disappears! If I put the bookmarks toolbar back into the customization window and click done the + sign reappears.
What the heck is going on?
Well, I just restored the bookmarks toolbar and clickable link from the customization pane and everything is back to normal. Weird!