Tested this on Cloud 39 branch and Cloud 39.6.1
This needs to be tested on production using system admin user
- Login as system admin user (admin/admin for DP environments)
- open repository browser page
- "Loading document library" message appears and nothing happen
As part of this please make sure you retest https://issues.alfresco.com/jira/browse/MNT-14511 when this issue is fixed.