I’d never heard of anyone else this happed to before! Less consequences for me but there was a ~4 year period of my life where at least once a week I’d have a dream wherei just got up and went through a normal day from 8:00 to like 11:00 or as late as like 16:00 sometimes. For example in the dream I would wake up, go to the gym, hang out with my friends as normal and then I would wake up and have to do the whole day again, but sometimes I thought the dream had been real and would brace myself to deal with leftover arguments or jobs from the dream
The only tell I ever noticed was that people were way meaner in the dream
It’s commonly used as a plot device in stories, and in my experience people will tell you about it as a way to “wake up” in the dream if you complain about nightmares and people I’ve spoken to IRL about it take it as accepted truth