time in this game happens when you move between areas, when you fight and when you have sex, I'm not sure how much time is scripted for that scene with Mia, but it sounds like a reasonable thing for it to take longer than a quick roll in the hay.I understand, from playing this game that some quest can't happen until other quest are done. The small bugs I'm referring to for example are when your done screwing the girl in the woods that has a grandma, when your done with the cutscenes the screen goes dark like if it became nighttime even though you screwed her first thing in the morning but once you leave to another area like say weirdwood it turns daytime. Then another one, I don't know if it's a bug but the key that's found on the skeleton in weirdwood opens a small house that allows you to open chest that give you 1000 coins and potions, that can be exploited 1 time per day. As for other bugs there very small and slight that I can't remember but if I come across them again, I'll be sure to take screenshots or write them down at that moment, so I won't forget but again this is a great game I'm like 50+ hours in and over 100+ quests done and I'm not really looking forward to ending this game. Will definitely be doing another play through.
The cheat chests are supposed to renew every day so that's a feature not a bug.
Tinkerer is pretty good at fixing bugs as they are reported so absolutely take note of any bugs you think are in the game an report them, with screenshots and try to upload saves that can demonstrate them if possible.