Can't change service point for open page request

Steps to repro:

1. Log into snapshot
2. Create a page request and save
3. Edit page request and select new pickup service point
4. Click save and close button

Expected: The service point change should save (it should be possible to change the pickup service point as long at the request status is Open - Not yet filled

Actual: Nothing happens

Additional info:

• If I select a new the same pickup service point that was previously selected, the save and close button is greyed out, as well (this seems really weird)
• This bug applies to holds and recalls as well as pages