Just an addition: The bug shows similarities to this one, although it was only reported for Firefox:
https://bugzilla.mozilla.org/show_bug.cgi?id=1194358
Users report that compiz may cause the problems, and that would explain why the problem isn't present when using "Gnome Classic (no effects)" as compiz is not running there (but metacity).
So maybe the problem is compiz, not the nvidia driver?
Just an addition: The bug shows similarities to this one, although it was only reported for Firefox:
https:/ /bugzilla. mozilla. org/show_ bug.cgi? id=1194358
Users report that compiz may cause the problems, and that would explain why the problem isn't present when using "Gnome Classic (no effects)" as compiz is not running there (but metacity).
So maybe the problem is compiz, not the nvidia driver?