Behavior of "Automatic" citation when something unciteable is provided is confusing.

Issues:

• "Back" at the top doesn't look connected to the error message, hard to realize that it allows the user to go back to the text field.
• The text field with erroneous input is hidden, making it impossible to possibly spot a typo.
• There is no clear indication that this is an error message (no red highlights).
• Error message directs the user to use "the Manual tab above", rather than just provide a clickable link/button.

I liked the one in the mockup on T96946, which I feel solves all these problems:

Can we do something like that? Especially let's keep the text field visible, with 'invalid' state set, rather than provide an awkward "Back" button.