Due to staffing limitations returns with balance dues on them have once again been put on the "back burner" while all the efforts have been put to processing returns with refunds, recalculating returns for the tax law changes, issuing stimulus payments and getting ready for the upcoming CTC advance payments.
If you had a balance due and you have successfully paid it then you can check your account/return transcripts to see when it finally posts after being processed : https://www.irs.gov/individuals/get-transcript
