Following that last update to Firefox, the Facebook game Criminal Case stopped working properly. When certain things are done in the game the screen in the game is shrunk and doesn't occupy all the space it should do. When this happens, none of the buttons on that screen in the game work. In the attached image, the in-game screen should occupy all the black area that surrounds it.

Other players of the game have reported similar problems when using Firefox. I am currently playing the game successfully in Opera GX browser.