I've been using Linux Mint and Opera for about a year now and never had any problems playing videos and GIFS in facebook. But both videos and GIFS stopped working, only in facebook, about 2 weeks ago. I can still play videos on YouTube and can play GIFS on sites like giphy.com. I can even play videos and GIFS in facebook Messenger, but not facebook itself. If I switch over to Chrome, videos and GIFS on facebook work fine, so the problem is only with Opera. I have scoured my facebook settings for anything that might be causing this problem but came up empty. Facebook used to have a setting to disable automatic video playback, and I thought the problem might be related to that, but I no longer see that in the settings options. I am running Linux Mint version 4.4.0-130-generic and Opera version 54.0. Any thoughts?