I keep having a problem on when returning to a tab or someone when opening a link the page is simply shown as a black screen. It appears that the page is loaded in the background but literally nothing is displayed on screen. Refreshing does nothing. Navigating to a different page does nothing (as in the screen is still black, but Firefox goes through the motions of "loading" the page). Searching does the same. If I close the tan and then immediately hit undo the page will often be displayed. This has been going on for maybe 2/3 months now and I have updated the application and my phone multiple times; both are up to do. I can only assume this is a bug at the stage, but if someone has insight into a work around, that would be great. Example image showing the page being "loaded" but nothing displayed.