Summary

When I was moving some tickets into a different column in my sprint, I saw some "Exception: Uncaught TypeError: Cannot read property 'top' of null" exceptions.

Steps to reproduce

• Remove the "Schedule Issue" project permission from a user and attempt to move an issue with this user between columns
• Use a board that does not have ranking enabled, for example "ORDER BY rank ASC" instead of "ORDER BY Rank ASC"

Expected Result

an error message will be thrown indicating a missing permission or a misconfigured board

Actual Result

Exception: Uncaught TypeError: Cannot read property 'top' of null
 is thrown

Workaround

• Ensure users have the Schedule Issue project permission
• Ensure the board in use has ranking properly enabled