I had this exact same experience with my 2018 tax return. I completely finalized both federal and state, and I even got an email confirming I just had to wait for my state and federal returns to be accepted.
Only… my state taxes were never sent out. I owed a small amount, so I never even noticed it wasn’t withdrawn from my account. Now, in 2022, I just had over double my 2018 state tax bill taken out of my account by a lien. My state says they never received a return for that year. I got someone on the phone at TurboTax, and they couldn’t explain why it wasn’t sent. I was simply told “if you need to refile for 2018, we might be able to waive the fee to refile.” This, after costing me over $400 in fees and interest.
