Any clue why the facebook videos arw glitchy on my Note 5?

[AC Question]

I just got the Note 5 and it's awesome. The videos from my FB app are a bit glitchy. Sometimes I have to back out and reply to get them to work. The audio is fine, but the video goes black. And it happens if I rotate to landscape view. Videos in all other applications are totally fine, so I'm guessing this is a fb app issue. ???