I ran into the same issue.
It shows an empty name attribute, but has a required attribute on a hidden input element. I think it’s Chrome trying to focus on something that is hidden and a empty name attribute.
My workaround was the same, I ended up making those date fields in the Repeater field NOT required. That resolved the issue. Chrome can not let the post update.
I had the same issue. Repeater with a required text field and a required date picker field. I did also have a separate required text field. I made them all not required which allowed me to update the page.