PG up and PG DN on the keyboard while creating issues don't work on Firefox

Issue Summary

The keys to navigating (Up/Down/Home/PgUp/End/etc/) don't work while creating issues on Firefox

Steps to Reproduce

1. Open a Firefox window
2. Access a project on your instance
3. Go for creating a new issue
4. When using the PG up and PG DN on the keyboard at the creation screen, it doesn't work

Expected Results

The page should move up and down

Actual Results

It's not possible to use the PG UP and PG DN on my keyboard.

Workaround

Currently, there is no known workaround for this behavior. A workaround will be added here when available