We saw it happen last year for ProSeries, not sure it was ever acknowledged or addressed by Intuit...or if they had any part in it to be honest.  Never saw an explanation anywhere either.

I never schedule a payment after April 10th...just in case something doesn't happen, we still have time to mail a check.

I verified multiple ones over the phone when it started happening, they were all scheduled...didnt seem to have any that were actually not approved.