Unable to close epics using the Comment Button

Summary

I can't close an epic using the Close epic button at the bottom of the page

Steps to reproduce

1. Navigate to an epic e.g. &1912
2. Navigate to the bottom of the page
3. Press the Close epic button

Example Project

What is the current bug behavior?

Closing an epic does not work when using the bottom button

What is the expected correct behavior?

Closing an epic works with the corresponding button

Relevant logs and/or screenshots

Output of checks

This bug happens on GitLab.com (next)

Possible fixes

Use the top button: