It's a little bit janky, but it does what I need it to do.
MacOS 12.5 - M2

on my old mac using it for charts. perfect.

__ ENGLISH

Hello, is it possible to update your addon, can you make the windows task bar appear which is at the bottom also in full screen, when you hover the mouse the bar appears and disappears, like the tabs at the top .
Thank you

__ FR

Bonjour, est il possible de faire un mise a jour de votre addon, pouvez vous faire apparaître la barre des taches de windows qui est en bas aussi en plein écran, au survol de la souris la barre apparait et disparait, comme les onglet en haut.
Merci

To get this working on FF Developer Edition v80 I also had to set `full-screen-api.allow-trusted-requests-only: false` in `about:config`

basic but does the job

The add-on does what is says, but is kinda pointless as Firefox already goes complete fullscreen with F11. However only if browser.fullscreen.autohide (about:config) is set to true, which is the default setting anyways.

It didn't work at first. But it works fine after running the Java script. Thanks for a very useful add-on.

It works (mostly) as intended. Four things to note:
1. control+shift+F is the keyboard shortcut, even on a Mac. This is actually very helpful. Since it does not override the default fullscreen behavior, both fullscreen modes are within reach (command+shift+F calls for the default fullscreen behavior).
2. Due to some restrictions it does not work on addons.mozilla.org. This might lead to some false reports saying it does not work.
3. As soon as you do anything in a webpage (click a link, search with Google, etc.), it will revert back to the default fullscreen behavior.
4. It requires access to "all data in all websites", so regular code audits might be needed to ensure that it does not do anything malicious.