Problem with Anton Lesser name

[muttetjeff]

Hello, I installed Jellyfin on a Qnap TS-253D and everything works fine. Except that I am unable to add the name of Anton Lesser (actor who plays in the series Endeavour) to the list of actors. When I click on 'save' it never appears in the bottom list. I tried several times and it doesn't work. This is the only artist name that I am unable to add. Really weird...

[RedNo7]

This sounds more like a Jellfin core issue (rather than a QNAP packaging issue).