I was trying to kill my kuva lich and got softlocked 4 attempts in a row. My UI would say I was somehow dead, yet standing and unable to do anything. /unstuck did not work. I believe it may have been caused by an interaction between the Hirudo I was using and my kuva lich's Cursed Ground ability. Once I stopped trying to use Hirudo I was able to kill it. Edit: It seems to be a bug with just Hirudo and liches. I have a new lich now that does not use Cursed Ground and I just encountered the bug again because I thought it was safe to use Hirudo.