Can't select "+ Create issue" if it's open on a different Epic

Summary

Can't select "+ Create issue" if it's open on a different Epic

Steps to Reproduce:

1. Open a board with at least 1 epic.
2. Select backlog on the left menu.
3. Select epic A.
4. Select epic B.
5. Click on "+ create issue".

Environment

JIRA 7.4, JIRA 7.5

Expected Results

The cursor to write the issue name should appear and create the issue.

Actual Results

Nothing will happen as it was never clicked to create the issue.

Workaround

1. Select again epic A, do not create a new issue, and select epic B, then create an issue or
2. Refresh the page and click on the preferred Epic again.