Anybody know how i can get rid of this?

This morning when I went to go to search and i looked at any slideshow/photo post, this weird UI showed up, no clue how to get rid of it and it doesn't even show full comments with it! It only started up this morning. Even tried clearing cache and restarting, it doesnt show up on posts on my FYP, only in search. No clue what to do here. </3