Issue Summary

If the Custom field with a default value set is enabled for Project A, when creating a linked issue from Project B, the default value isn’t set to the Custom Field.
This is reproducible on the Jira Data Center.

Steps to Reproduce

1. In Jira Administration > Issues > Custom fields, click Add custom field
2. Select Select List(single choice) and click Next
3. Give a name to the custom field, add two options to it and click Next
4. Select Project A and click Create
5. Assign the screens of Project A to the custom field and click Update
6. Click ... next to the newly created custom field and click Configure contexts
7. Click Edit Default value and set one option as the default value
8. Create a new ticket in Project A
9. The default value is automatically populated to the custom field
10. In the issue ticket of Project B, click More > Create linked issue
11. Change the Project from Project B to Project A in the pop-out window

Please refer to the record for the steps to reproduce the issue:
https://www.loom.com/share/d32dcf0f55e3414b8eaeb25d882fe307?sid=8f3e7bb8-b6f9-4d5f-a489-95c18fd95899

Expected Results

The default value is automatically populated to the custom field

Actual Results

The default value isn't automatically populated to the custom field

Workaround

Update the custom field manually