I have listed this bug here as the new forum (community) page doesnt let me submit new requests.
In my monthly planning board I have a pane in list mode and groped by tags that lists this month’s items (filtered by this month’s tag with Only exact tag matches option OFF). I have some items that have 2 tags (one being this month’s tag and another tag showing a complexity rating (low, med, high)). The items that have 2 tags only appear under one group and not under the other. for instance an item wtih low complexity and scheduled for this month (only appears under the complexity tag and not under the month tag).
My expectation is that an item with 2 tags would show in each tag group otherwise it is confusing.