A duplicate entry appears as soon as the number of groups exceeds 50.
On the groups UI page, if there are 50 or more groups, the 50th and 51st elements will appear as duplicates, and the last element will not be displayed.
VMware Identity Manager 3.3.7
This is a UI bug which occurs when there are 50 or more groups.
This issue is confirmed by Broadcom to be cosmetic and does not impact vIDM authentication. These duplicate user interface entries can be safely ignored
No duplicate row is created when the group count is below 50, confirming the issue is tied to the UI's handling of groups at or above this threshold.