Issue Summary

Change an issue's parent such as add an epic link changes issue's request type when default request type feature is turned on.

Steps to Reproduce

1. Go to project settings->features page and turn on `Default request type` feature if it's not on yet
2. Create an issue with a valid request type that is NOT the first request type (alphabetically) of the selected issue type
3. Add an epic link to the issue, note that epic link field might not be available by default, you will have to go to request type field config page to add the field

Expected Results

Issue's request type shouldn't change

Actual Results

Issue's request type is changed to the first request type of it's issue type

Workaround

Disable default request type feature from project settings->features