When creating a Sub-Defect from the Execution Details Window, any value selected for a Required Select List (single choice) custom field gives an error

Description
When creating a Sub-Defect from the Execution Details Window, any value selected for a Required Select List (single choice) custom field gives an error

Pre-conditions
Create a Select List (single choice) custom field and set it as Required and add it to the Defect creation screen

How to reproduce

1. Create a Sub-Defect on the Execution page
2. Select any of the values for the Select List (single choice) custom field

Actual result/Attachments
It will not allow us to create it with any value of the pre-defined drop-down list.

Expected result
It should allow it since it´s one of the values for the Select List (single choice) custom field