In Month and Week view, this intermediate step of selecting day was introduce to avoid jumping between view by mistake.
So when you select day by taping, selection is just highlighted, but its not confirmed.
When you tap on selection again you are conforming the selection, and you will be displayed selected Day View.
After second tap, all view should be in sync. But not after first tap as selection is not confirmed.
So to me current behaviour seems fine and expected one.
In Month and Week view, this intermediate step of selecting day was introduce to avoid jumping between view by mistake.
So when you select day by taping, selection is just highlighted, but its not confirmed.
When you tap on selection again you are conforming the selection, and you will be displayed selected Day View.
After second tap, all view should be in sync. But not after first tap as selection is not confirmed.
So to me current behaviour seems fine and expected one.