Focus returns to field after validation check

Problem/Motivation

When I add a field value and hit tab to go to the next field, focus jumps back to the first field after the ajax check.

Steps to reproduce

Set up unique field ajax for the title field.
Create new content, enter a title.
Hit tab, cursor goes to the next screen, but jumps back to title after a second.

Proposed resolution

Don't change focus, just show the message if any.

Remaining tasks

User interface changes

API changes

Data model changes