Issue Summary

When the user selects an epic in the Epic link field in the create issue screen by using the arrow keys and then hits Enter, the epic gets selected. When the user hits Enter again, the issue should be submitted and the modal window should close and a new issue must be created. However, the modal window doesn't close and hence there is a possibility of duplicate submission of the issue. 

Steps to Reproduce

1. Create an Epic say Epic 1 in Project A. 
2. Now, click on Create and then create a story/task and then scroll down to the Epic link field and use the arrow keys to choose an existing Epic. 
3. Hit Enter and the Epic gets selected. 
   
4. Now hit Enter again to submit the issue. 
5. The issue does get created in the background but the modal window doesn't close.
   

Expected Results

After selecting the Epic and hitting Enter issue should be created and modal should be closed.

Actual Results

Issue gets created in the background but the Create Issue modal window stays open, so the user can get confused and re-submit the issue again resulting in duplicate issue creation. 

Workaround

Instead of pressing Enter, user can click on the submit button to create the issue.