Issue Summary

This is reproducible on Cloud: yes

Steps to Reproduce

1. Create a default scrum project
2. Create a few sample Jira issues in the project 
3. Update the permissions in the project's permission scheme
   1. "Edit Issues": make sure this permission does include the current user
   2. "Manage sprints": make sure this permission does include the current user
   3. "Schedule Issues": make sure this permission does not include the current user
4. Go to the default board's Backlog (a default sprint should already exist) 
5. Try to add one of the created Jira issues to the default sprint 

Expected Results

The Jira issue should be added to the sprint.

Actual Results

The Jira issue is not added to the sprint.

This error message is thrown:

"Something's gone wrong
Refresh the page and try again."

Workaround

Include the user in the "Schedule issues" permission.