Issue Summary

If you remove a user from a custom user picker field with the backspace/delete key or by clicking on the X, the removal will not be registered.
The same behavior is happening to the Raise this request on behalf of field.

Steps to Reproduce

Screen Recording 2021-10-07 at 10.22.58 AM.mov
Screen Recording 2022-01-13 at 2.08.02 PM.mov

Expected Results

The user picker field changes are applied.

Actual Results

The user picker field changes are not applied.

Workaround

If you specify a different user with "@UserNameHere" then clear it the edit(cleared field) does get saved.