Multiple tvshow db entries for same show on different sources

It seems multiple tvshow db entries are created if the same tvshow is spread across multiple sources.

1) Could I get confirmation it is not a problem on my side
2) Is it supposed to be so? Looks like CVideoDatabase::GetTvShowId is trying to get the show id by path, so I assume if the same show shows up on a different path, it could indeed lead to a new show entry being created, which seems like a bug to me...