1 & 2 I'll look into that.
3. It's probably unrelated to the hard drive. I hit that yesterday while playing the cultist. I'm trying to figure out what happened, oddly enough it was Kabula and map to the east for me too.
4. I'll see what's up, probably targeting of this ability is incorrectly set up.
5. I've noticed that one too. This one might have happened after I added clearing the invalid items that resulted in crashes. When enemies spawn with arrows in the backpack, it seems to lead to this issue, but it's ok when they have it in the ammo slot right away. I'll be doing some testing today and try to fix it for the next minor patch.