How do you turn off the chat that pops up automatically now on the Facebook Candy Crush?

SMO13

I let my children play this and the language isn't suitable for them to see. I didn't sign up for chat and don't want it on there anymore. 

StuckInATree

There's a chat function? I've never seen that before, only the FB chat bar to the right but it's not related to the game normally. Could you share a screenshot of this? Maybe it's a new feature that's being tested! Thanks!