As per your previous question: Seems 2 of the posts did not close, and because the bot closes posts in sequence (rather than checking for exactly 12 hours) it started closing posts that were only a few hours old... I've been away from my PC since yesterday, but I'll be able to check the logs in a few hours how/why that happened.
P.s. FWIW: The closing of games was been switched off for a few hours to give the newer games time to stay open... and will resume closing games now. Thanks for picking it up before too many games were affected.