I just emailed the OmniRom team with this issue this morning, and I came upon your thread. I'm having the SAME issue in Chrome with inline video playback, however after a short while Chrome FCs on me and it goes back to the main screen. It also puts a "ghost" image of the page that quit on me over my background image and the only option is to reboot the tablet. I'm hoping they will see this thread and address this.
Originally Posted by hansmaus3
i flashed my 4.0.4 Android with Omnirom 4.4.4, but i have problems with youtube (chrome and android browser): i get sound but only a black screen (in full screen mode it works). Do i have to install the "inofficial" flash player?