* Add test for losing focus when searching tag entries
* Revert unknown unit test fix
Removing this no longer breaks a unit test, and having it in here
results in the select box receiving focus unexpectedly. It's not
clear what problem this was solving, since it was manually applied
from a series of pull requests.
It claims to be fixing an issue that was specific to IE11, and I'm
willing to re-introduce that bug because there doesn't appear to be
a regression test for it, and it's breaking some critical use cases.
The goal should be to focus the search box if it would have normally
lost focus when the selection was updated.
Fixes#5485Fixes#5516Closes#5550
