Can not assign user to child site if enable 'Limit membership to members of the parent site'

• Type: Regression Bug
• Status: Closed
• Resolution: Won't Fix
• Affects Version/s: 7.2.X
• Fix Version/s: None
• Component/s: Sites Administration > Sites
• Labels:
  • QA-AUTOMATION
• QA Test Name:
  • LocalFile.SiteMemberships#LimitMembershipParentSite
• QA Test Score: 4

Steps for reproduce:

1. Add a site: Site Name
2. Add a child site for 'Site Name'
3. Enable 'Limit membership to members of the parent site' for child site
4. Add a user
5. Go to 'Site Name' > People > Memberships, assign new user to 'Site Name'
6. Go to child site > People > Memberships
7. Click add

Expected result:
Assign users to this site page display, can assign user to child site
Actual result:
Memberships is temporarily unavailable.