Partially watched show refuses to be marked watched/unwatched and maintain the change.

Running Version 1.11.1.4730 on linux (as a docker container). Everything works fine but I have one episode of one show that was partially watched. I finished watching the rest of it and it still reverts back to the partially watched status. I’ve manually triggered the watched status and it appears to take but a few minutes later the same show appears partially watched at the same point. Doesn’t seem to be happening with any other episodes or shows… just this one. I’m not even sure where to begin to figure this out. Any suggestions?