The problem is reproduced by doing below steps.
1. Create UNIX v2 Type Endpoint from User Console's Endpoints > Manage Endpoints > Create Endpoint page
This is a known issue which is recorded in Engineering ticket DE407210.
Identity Manager 14.2
We have created fix that addresses this issue.
Please raise a Technical Support call ticket and request for the fix attached to DE407210.
At the time of this article is written, we are targeting to delivered this fix into 14.2 CP5 onward.