won't open a new tab... IM by clicking on the +, but nothing happens

So I have a laptop Dell XPS L702X (win7.64) and a surface of two Microsoft pro running the same version of FF same Favorites and everything. I went through all the settings on both and against all. Put both be exactly the same. But on my laptop (since the last update), I can not open a new tab by clicking on the + or using ctrl + shift + P. Nothing works. It's like the feature was cut but the + is still there and it highlights even when I pass my cursor over them. SO next, I completely uninstalled FF and reinstalled later again. But still its not working do not. Oh and btw, it works very well on my surface and other computers.

This can be caused by an extension that is not working properly.
Extension of community toolbar have recently been reported to cause such a question.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/tools > Modules > Extensions) or if hardware acceleration is the cause of the problem.

  • Put yourself in the DEFAULT theme: Firefox/tools > Modules > appearance
  • Do NOT click on the reset button on the startup window Mode safe

Tags: Firefox

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