Greetings,
I tried to search if this has been reported already, but couldn't find anything; ignore me if you've heard this one.
During a Long Rest, I believe this was the second time the owlbear cub came to visit me, with an injured paw. After fixing it up, I saw the cub standing in my camp, so I went over to harass it... I mean, pet it.
When I chose the "Pet him." option, the screen went black, though I could hear audio which I could imagine might be what petting an owlbear might sound like. When the encounter was over, I was standing in place before the cub again. Seems the cutscene is just missing, nothing else seems affected.
btw, if this is not how to report bugs, let me know. As I always say, "the only good bug is a dead bug" (I'm a QA guy IRL)

John