Gokul G1, Jan 11, 2019 : two days after i started using the one plus 6t , i noticed Facebook stickers popping up in gallery and in Instagram and whatsapp when you open gallery to send a picture. Here's an easy and effective solution to this bug. 1) In file manager open internal storage. 2) go to Android>data>com.facebook.orca 3) open files and delete the stickers folder that's just it. problem solved.