Is anyone else having this problem? I'm not sure if this is a bug or my user error. When looking at my calendar in month view, I try to touch a day and and it inconsistently brings up the day view. I can peek with 3D touch, but have a hard time selecting a day. The workaround is to change to landscape where the day will select and show on the side. Given that it sometimes works, I THINK I'm doing it right, but anyone has a tip, please share!