If this is a leap year problem, apparently similar issues happened 4 years ago and they never fixed it...
Thread from exactly 4 years ago, March 2 2016: https://old.reddit.com/r/RobinHood/comments/48mep4/robinhood...
Thread that pointed it out: https://old.reddit.com/r/wallstreetbets/comments/fcoaev/and_...