Cannot reassign user in Person Accounts

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.4.13 DXP GA1, 7.4.3.4 CE GA4, Master
• Component/s: User Management > Business Accounts
• Labels:
  • pt-app-security-review
• Fix Priority: 4
• Git Pull Request: https://github.com/liferay-usm/liferay-portal/pull/294

Steps to Reproduce:

1. Create empty Person Account
2. Assign one User (user1) to said Person Account
3. Create a second User (user2) via Select in Person Account
4. Click Select again and choose previous account user (user1)

Expected results: First user can be reassigned
Actual results: Clicking Choose next to the first user will generate js errors.

Uncaught TypeError: Cannot set properties of undefined (setting 'value')

To reassign successfully, user needs to remove the assigned user and save the person account. JS errors will not appear after.

Reproduced on:
Tomcat 9.0.53 + MySQL 5.7
Portal master GIT ID: 5ac498f3836deeb2db89f25bb93539a2d6309fd0