This has been working fine for me for the past couple months, i.e. 100% of the time i've had Overseerr deployed. I haven't changed anything about my setup, but as of this morning the "affected seasons" dropdown is no longer letting me select any seasons. I've also noticed it's now marking 0 of the seasons as available, so I presume this is the cause of the issue. I see a button to make all seasons as available, but that would be incorrect. Is it possible to only mark some of them?
This issue shows up on several shows, one of which I was able to fix by marking all seasons as available. I do have all of them, but for some reason the series was only marked as "partially available." This persists through a reboot, and I am currently up to date. Was able to reproduce on mobile as well.