Happened on a few occasions before it became noticeable and an issue (lost my balance of ~5 LTC twice to this today).
Found that manual betting limbo as soon as the bet button finishes refreshing will animate the balance to refresh but it does not refresh to the newly updated balance and will return to the starting balance.
Balance doesn't update to the ACTUAL bal until at least 2 seconds have passed as seen at the end of the video where it animates and refreshes to the new balance. This happened on both to the upside and downside.
Moderator Posimoh is aware of this issue and has the screen record as well in case the imgur link doens't work.
Bonus brownie points, live stats didn't update the entire time.
Username is SIllyWhiz900 for reference.