Quick actions (label) do not work with code in issue description

Summary

If there is code (backtick or 3 backticks) in issue description, quick action for labels (maybe others as well, didn't check) does not work.

Steps to reproduce

Create the issue with quick action and code in it.

Example Project

mhusgradacac/labelthingy#1

What is the current bug behaviour?

Quick action is not working (label is not applied).

What is the expected correct behaviour?

Label is applied (quick action working).

Relevant logs and/or screenshots

Screenshot_2020-09-02_at_08.50.07

Output of checks

This bug happens on GitLab.com