Annoying reminder setting bug
If it's 2:00 in the afternoon, and I set a reminder on a todo "tod at 5", you know I am expecting 5pm. When I see the reminder show up at 5am (in the past), that feels like a bug to me.
Even "tom at 5" probably suggests PM, though I supposed it could be AM. At a minimum though...don't set a reminder in the past, when I clearly meant the future.