I really have no reason to open a return after it has been filed but I just opened one I sent today with the recovery rebate and it happened here as well.  I don't have time to sit on the phone to talk to someone with customer service who will have to pawn you off on someone else who will type back to the first rep that there is no issue.  I hate to say this but you may have to wait until the return shows up on "Where's My Refund" to see what the client will actually be getting.  In my case, the entire overpayment was applied to 2021 so I can't check.

I did open several I sent last week and prior and the message is not showing up on those returns.