Requester Popup Filter Being Remembered

Steps to repro:

1. Log into snapshot-stable (also tested in testing)
2. Go to Requests
3. Create a request for a checked out item
4. Click the Requester lookup on the create new request form and select, for example, Faculty
5. Pick a user/requester and save the request
6. Create new request
7. Open the Requester lookup

Expected: Filters should be in default state (nothing selected)

Actual: Previously selected filter is remembered

Additional info: This may be a broader issue, as I also saw a filter being remembered in the proxy selection lookup on the user record.