It's not a bug. It air Monday through Friday after midnight. So each episode is actually released very early the next day.

So this is wrong one of two ways:

If you want to go by the actual day they air, then they air Tuesday through Friday.

If not, then use the actual episode date shown on Paramount. There's a reason the metadata shows the day before the listed air date. The person filling out the data is putting the air date based on Paramount/CBSs official listing and TMDB is assigning the technical day of airing. There needs to be a decision made on one of them and I'd assume it should follow CBSs dates.

Nope. This is correct both ways.

Episodes titles are officials and are the ones CBS use: https://www.cbs.com/shows/after-midnight/

The air date entered on TMDB should always be the "real" air date, regardless of how CBS decides to communicate the air date to its viewers to make things clearer.

It seems really dumb to use their listing but then force the listing to be the actual air date. I get TMDB has its own rules but having conflicting data for the sake of an arbitrary rule on 1 show seems silly.