Shows/Seasons marked as Rewatching when not

I don't know if it's a bug, or bug-ish, but I have a couple of titles on the Progress page showing as Rewatching show/season - I don’t know if this is a bug or if I’ve inadvertently done something, but I can’t see anything in the tracking history.

Rivals S2 was scrobbled via Plex on the dates listed in the tracking history, S1 was marked as watched using the air dates. Show status should be Waiting.

COBRA was marked as watched using the air dates for S1 & S2. Show status should be Watching.

1. I thought you could only mark Watched shows for rewatching?

2. How do I unmark something as rewatching?

3. The rewatching flag doesn't appear on the show page, or anywhere else - perhaps this needs to be added for better visibility?