I didn't initially know this, and now 40 levels later this bug is really messing up my save. I don't want to lose 3 days of real time played, but at the same time this is a serious issue as it is difficult to loot the bodies of creatures effected by this bug.
Please Bethesda, please patch this with the next patch. This has been a known bug since December.
Additonally, please patch Pain Train randomly bugging out. My build incorporated both it and the Cryolater, and this combo of bugs has really messed up the way I play.