Morning, every time when I click on a link on a website which should open a pdf document, firefox start opening several (infinite) new tabs with the document. Even if I close Firefox completely the process will continue if i open Firefox again. This can only be stopped when I smash the Strg+W Puttons to close all the Tabs faster then they are opening. I hope someone can help me with this. It is really annoying when it happens. Thanks and best regards.