naked army of the dead

[Caleindal 1]

when doing maps Im running into the naked dead, any clues as to what is causing them to spawn in naked?

[UDO 361]

no idea as i have same 

[wildbill 142]

Ya, just started seeing this today. Doesn't seem to cause any real problems though. To me, they kind of look like ghosts, a bit see through.