Firefox configuration

Plug-ins

• Auto Fullscreen
• Easy Container Shortcuts

about:config

Disable fullscreen widgets

full-screen-api.ignore-widgets (Boolean): true

Disable the fullscreen animation

ui.prefersReducedMotion (Number): 1

The following two should not be required in a new install of Firefox, but in case they are set from an old installation, make sure to set them to the following values:

full-screen-api.transition-duration.enter (String): 0 0

full-screen-api.transition-duration.leave (String): 0 0

The ui.prefersReducedMotion should indeed be a Number. A Boolean value true will not work.

References

• Disable the fullscreen animation in Firefox 80 plus 2020
• Microsoft style guide: full-screen