When a monk rests the monk stance's timer is reset and a stance is newly usable after 1 minute. But I frequently happen to rest and log out right after. When I do that, the minute never passes and as a result if I log back in before a reset I'm unable to use a monk stance until I have rested again.
Small side effects and very known. Could probably add it to reset during reset, but resting shouldn't be too big of a deal.
Not a big deal at all, I reported it simply because I didn't know it was well known.