I got a weirder one than that. I wish I had grabbed a screenshot of it. One of the major characters that dies in a faction storyline appeared halfway in the ground, ghosting/coasting through it as I was running to another unrelated quest. I check back at the base, and he's alive and well again! He's even conversing with the other faction members.
I may have to use the "kill" console command on him, for continuity.
Note: I also had non-stop, unfixable CTDs in Bonechill Pass. It happens every time, and apparently I'm not the only one to get it. I had to use the noclip "tcl" console command to avoid the place and get to the dragon wall that the pass gives you access to. Apparently, you can look at your feet to make it through. The game will crash when a certain object comes into view. Windowed mode may also fix this.