Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0 Build ID: 20161024030205 STR: 1/ go to http://gabrielecirulli.github.io/2048/ 2/ play with the game fast ER: Fluid animations AR: Animations are a bit jerky, some of the tiles blink while moving This is a regression, it used to be fluid. Regression window with mozregression: INFO: Last good revision: 0d101ebfd95cf7f63fd036e5d951b84f27ac6a4d INFO: First bad revision: 6a000381265d312481d4213e1ff66c937391312f INFO: Pushlog: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=0d101ebfd95cf7f63fd036e5d951b84f27ac6a4d&tochange=6a000381265d312481d4213e1ff66c937391312f INFO: Looks like the following bug has the changes which introduced the regression: https://bugzilla.mozilla.org/show_bug.cgi?id=1223658

Yes, this is the same as bug 1311196 which is showing up in a lot of places.