This is happening on many objects that are thrown. It seems like the damage that the object is supposed to cause is instead redirected back to the original thrower. It's happening on all characters. Serves me right for trying to play patch 9 right away. Knew it was just going to be unpaid bug testing
You may have missed the fact that Baldur's Gate 3 is in Early access.
"Only buy the game now if you’d like an early look, or if you want to participate in community feedback ahead of the full launch. Otherwise, we suggest you wait until version 1.0 releases – that way, you’ll be able to enjoy the full story of Baldur’s Gate 3 along with all of the playable classes, races, skills and spells that will be included in the full game – and you’ll get less of the bugs.”
If you didn't want so many bugs you should have waited until August.
