This glitch started when I began the "Served Cold" quest. I went to destroy the Morag Tong and I noticed that after I killed them, they, and some of the guards from Raven Rock would glitch in an odd wooden plank position, and this rendered them unable to be looted. I loaded a new game with a different character who is currently in Skyrim doing a companions quest, and some of the Silver Hand members I've killed are stuck in the same position. Hopefully, this will get patched, because It's costing me loot. Thanks for reading.