septeven
I have made a simple test Capx for u.
I found that when the project is not set to fullscreen "Scale", the shaking stops.
However, with fullscreen "Scale" enabled the 2 plugins start shaking.
Only in Chrome.
My chrome version is 24.0.1312.52 m
Hope this helps <img src="smileys/smiley1.gif" border="0" align="middle">