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Tabs and address bar visible when watching videos in full screen

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After updating to Firefox 55.0.3, all pages with full screen streaming video (not just YouTube) still show the tabs and address bar. https://i.imgur.com/UWrns8T.png I found an archived thread https://support.mozilla.org/en-US/que.../1008899 with the same problem, but the solution provided no longer applies, there is no 'Hide Toolbars' option.

After updating to Firefox 55.0.3, all pages with full screen streaming video (not just YouTube) still show the tabs and address bar. https://i.imgur.com/UWrns8T.png I found an archived thread [https://support.mozilla.org/en-US/questions/1008899] with the same problem, but the solution provided no longer applies, there is no 'Hide Toolbars' option.

DevilSlayerDante modificouno o

Chosen solution

Let's try Firefox in Safe Mode to check if one of the extensions or if hardware acceleration is causing the problem.

If Firefox is not running : Hold down the Shift key when starting Firefox. If Firefox is running : 3-bar menu => ' ? ' (at the bottom of the dropdown) => 'Restart with Add-ons disabled'. Then OK the restart. A small dialog should appear. Click 'Start in Safe Mode' ( not 'Refresh' !)

See : https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode

And also : https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems


If that doesn't do the trick, would you take a look at this article :

How to fix preferences that won't save

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All Replies (4)

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Hi  !

Would you please try this :

Type in the address bar about:config (press Enter) (promise to be careful, if asked) Type and look for the preference : browser.fullscreen.autohide and set its value to true

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It's already set to true

DevilSlayerDante modificouno o

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Chosen Solution

Let's try Firefox in Safe Mode to check if one of the extensions or if hardware acceleration is causing the problem.

If Firefox is not running : Hold down the Shift key when starting Firefox. If Firefox is running : 3-bar menu => ' ? ' (at the bottom of the dropdown) => 'Restart with Add-ons disabled'. Then OK the restart. A small dialog should appear. Click 'Start in Safe Mode' ( not 'Refresh' !)

See : https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode

And also : https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems


If that doesn't do the trick, would you take a look at this article :

How to fix preferences that won't save

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It was the theme I've been using for over a year, Firefox 55 broke it...this is frustrating me to epic proportions.