I have the same problem since weeks or maybe even months and didn't bother me too much at first but it's still very annoying so I post it here. I have a problem with image texture, it often happens when I play a game, then for the 2nd match the bug appear, like in the following screenshot. I have already tried to uninstall and re install the arena but it didn't work, I don't know what to do. The only thing working is quitting the game and coming back, but eventually, after a few games the bug come back, out of nowhere... Sometimes the bug appears at the top of my screen but the most annoying is this one.