-- Updated 1-29-17 -- I went ahead and downgraded to FF50 and it's back to normal. Turned off updates despite the security risk. I actually had this problem before with 48.0.2 and now again with 51.0.1. Somehow the issue was fixed in an update until this version. It is quite a specific, maddening issue, and I'm not sure how to fix it. Noticed that in a game (http://www.kongregate.com/games/Codename_Enter/shards-of-titan) I play, after the update to 48.0.2 things look blurry and out of focus if the page is zoomed in at anything above 100%. I tried it in safe mode as well and got the same results. The graphics seem slightly larger than before, and the text boxes on the side of the screen are out of focus unless the mouse is over the area. I took a screenshot of both and attached it. Top one is how it looks normally, bottom is when the mouse is over that text area which makes it clear. I've tried out other flash games and they don't seem to suffer the same issue, so not sure if its the combination of text boxes and graphics or if the whole thing is just unique to this game. Anything else I should try? My next step would be a downgrade to a previous version to see if that would go back to how it was.