Keyboard shortcut for "edit issue" is broken

Summary

Keyboard shortcut to edit issues (e) no longer working

Steps to reproduce

1. Go to an issue on GitLab.com
2. Hit e
3. Observe issue

Example Project

GitLab CE project (this issue)

What is the current bug behavior?

Issues page does not react to e

What is the expected correct behavior?

Issue page enters edit mode

Output of checks

This bug happens on GitLab.com

Possible fixes