[UlfSchmidt]

This happens when I play any episode of any of my archived TV series (sorry that I was not clear enough, this is not related to Live TV), and it is only shown in the video playlist not correctly. It is displayed correctly anywhere else.

Weird, I never see this with any of my episodes. Looking at the code this can only happen if the episode label contains the "1x01"-part as well (this is the case for the episode view -- the one where all seasons and episodes are listed). How exactly are you starting to play the episodes? And how do the episodes show up in Chorus?

Good hint: it behaves differently. When I start an episode directly from the Kodi Remote App, everything’s fine. But when I start the same episode from within Kodi itself, the episode number is doubled in the playlist. In Chorus, there is also no such label shown at all, see below:

But, when started directly from Kodi using the Kodi Remote of the App and not the archive browser, one label is also there in Chorus:

So, once again it looks like that the root cause of the issue is not to be found in the App, but in Kodi itself. Maybe you may want to implement a small workaround by simply not adding another episode label when one is already present?