Apparently, dupes do not enjoy massages anymore ...

oh no. it reminded me of the old method of soviet punitive medicine - treatment with cans.
I was a victim of this myself a couple of times when I was a small boy about 35 years ago.

have the same issues, thought it the was the mod true tiles causing it.. it seems you dont have this mod though. 

Changed Status to Closed

That's the intended animation for that skin.