The error appears when user goes back to "Assigned users" page after appearing "Already assigned to a knowledge base" modal

Overview: The Folio error appears when user goes back to "Assigned users" page after appearing "Already assigned to a knowledge base" modal.
There must be at least two KB credentials.
Steps to Reproduce:

1. Log into Snapshot FOLIO environment as User with the following permissiosn:
   eHoldings: Can view providers, packages, titles detail records
   Settings (eHoldings): Can assign/unassign a user from a KB
   Settings (eholdings): Can view access status types
   Settings (eholdings): Can view custom labels
   Settings (eHoldings): configure root proxy setting
   Settings (eholdings): View Usage Consolidation API credentials

2. Navigated to "Settings >> eHoldings".

3. Click on the "Assigned users" option at the first knowledge base and assign any user to it.

4. Click on the "Assigned users" option at knowledge base different to which you choose at step 3 (second knowledge base).

5. Assign the same user to this KB. >> pop-up modal "Already assigned to a knowledge base" should display 

6. Close the pop-up modal.

7. Click on the "Access status types" option of the same KB.

8. Click on the "Assigned users" option of the same KB.

Expected result: The list of assigned users displays.
Actual result: The error displays at the third pane.
Additional Information:
You can switch between applications instead of switching to ""Access status types" pane.
See attached screencast.
Interested parties: @Khalilah Gambrell