If you’re a Firefox user you may experience a problem where: when you visit an addon page it displays a black screen with almost invisible “unauthorized” black text in the top left corner.
This is due to Firefox’s “Enhanced Tracking Protection” and is simple to fix.
Solution:
- Open settings
- Click “Privacy and Security” in the sidebar
- Under the “Enhanced Tracking Protection” header, change the security level setting to “Standard”
- Click the lock in Firefox’s address bar
- Click “Clear cookies & site data”
- Refresh the page and log back into HA
- Your addons will display correctly
