This happened on a cell phone from version 292.10 - but on 292.8 there were issues with a tablet.
It seems they've changed the navigation bar to be for an app - not the immersive full screen experience you need for a game. The documentation - two pages further from the link Fernando provided - gives you 3 options to hide the navigation and title bars for games so they don't keep popping up - and one for apps - and we now have the one for apps and none of the ones for games.
It breaks every single game I've ever written because you can't play it - the taskbar pops up over parts of the game - sometimes the most critical part of the game as well. I just can't use Fusion any more.