@hyperion7 saidI have observed this with Firefox running on MacOs X El Capitan.
My analysis screen has suddenly started to shake when I access it.
Specifically when I press the backward and forward buttons.
Is anyone else getting this?
If this is a local problem, how do I fix?
It helped to start Firefox without add-ons.
@Hyperion7
I checked using my laptop and firefox and do not see any 'screen wobble'.
You may get a better response if you repost this in the Help Forum.