I have the same issue with one return.  All the others have been transmitted and accepted, but one return is stuck at Intuit.  There was an alert that came through when I opened ProSeries on Tuesday, February 16, that said,

"ProSeries 2020 Individual returns filed on or before 2/12/21 may still be displaying a "Sent to Intuit" status. We are experiencing a delay in processing certain individual federal and state returns. At this time please continue to update your E-file status. We are working to get these returns processed as quickly as possible."

No updates since then, at least not that I've received.  It would be nice to have a timeline as to when this will be resolved and to know what "certain individual....returns" means.  Is the problem related to a specific form or schedule included in the return?