Just updated my 2.1 flame with today's build, and the clock (in the bar at the top) is showing 18:43 instead of 23:04. I am pretty sure the time was correct before the update. fwiw, th clock app is also showing the wrong time. I just went to the settings and manually put the clock back to the correct time, but an sms that I received just before I fixed the time setting is now shown at the wrong place in the conversation view which makes it look like it desappeared for users that haven't experienced this bug a couple of times already (Just to illustrate the impact of this bug).
This ticket is kinda old, I'll reopen if it happens again.