I've seen the weapon thing happen to some players but have never run into it myself. I think it might have to do with how the game is performing on your computer. I'll see if I can fix it but it is hard to test when I can't replicate it myself unfortunately.
I haven't seen that intestinal cannon issue though, I can change the way it's set up maybe for next patch. You should be able to walk off and back on at least and hopefully it will work then.