I get the message saying I must wait six hours before I can rest again. I kept checking, and within a space of 2 minutes, it went from saying "six hours" to being able to rest. Mind you, there was the right amount of time in between, but it didn't properly tell me how long there was left before I had to rest.
I encountered this as well, although I went from six hours to five hours to being able to rest. I imagine this is a feature of the new time management system.
I'm pretty sure it's not a "feature." <.<