Custom Room → Roadmaps → Epics by Theme view currently shows all themes related to the selected PIs, and not just the themes that are strictly related to the Custom Room through their children Epics relationships.

This results in a lot of themes being shown that have no items inside when expanded (as the children get filtered out by the custom room relationship at that point). This could be misleading and it also makes it harder for users to find the relevant themes quickly.

Please add the ability to only see Themes related to the custom room through their children epics, in Custom Room → Roadmaps → Epics by Theme view.

Thanks!