I think I know what's going on.
If there is only one video with eg. "show=blabla" it won't be placed in separate group.
But as soon as I add "show=blabla" to another video then both of them will create a group.
So maybe it is not an issue after all ...
Interesting to think about this. To me, the default search is better to only group items by show and album when there are multiple items in the group. My suggestion would be to add sort by 'show/album' that is similar but allows show groups to have 1 or more items. Not much work but I am not planning to release 122.9 until September so might take a while. (I am travelling at the moment so a limited with what work I can do)
@Peceha thanks for the clarifying diagrams and positive feedback (y)
It's been already one month since the update but finally I got my hands on it ;) - working at sea, not much time for fun, Hehe.
Thanks for implementing the sugestions and for keeping the project alive!