Sorry for the delay. I've been slammed.
Based on the video you sent, and the fact that it's only happening in Bloqs, I'm fairly confident the issue is with Bloqs. And it looks like Bloqs is too early running ajax validation against the field, determining there is an issue, and not re-running it.
Do you have the title input (or any other inputs) in Ansel set to required in the fields settings for that Block? Might be worth turning those off if so as a work-around.