bug Rated 4 out of 5 stars

bug: after apply full screen mode, flash contents dont't show

This review is for a previous version of the add-on (8.5). 

Right click on your Firefox icon (not the one in your task bar), if it's not on your desktop, find it in the Mozilla Firefox program folder.

After right clicking, select Properties, then the Compatibility tab, then check the box that says Disable display scaling on high DPI settings.

http://support.mozilla.com/en-US/questions/881572?s=flash+fullscreen&r=0&as=s