While the plug-in gets fixed, you can run this JS manually by adding it to the custom script at the bottom of the plug-in's option page:

document.getElementById("full-bleed-container").setAttribute("style","z-index: 1000;position:absolute");

The custom script icon won't be accessible because of the items to overlay the video controls, so you'll want to turn off the option to automatically expand video.

Thank you for the Update.

Love the extension, just writing this review to report that cinema mode is broken again. I see other reports saying the same. Are updates to FF itself causing the break?

cinema mode no longer functions

all good

Fantastica fuonziona per tante cose mi piace che cambia il colore a youtupe e aumenta il volume

Honestly, this makes browsing and watching Youtube videos immeasurably better than the vanilla experience. Changing color themes, making videos expand to fit the screen space, adding more controls, and giving the option to disable Youtube Chat are all immensely useful.

Also, the developer seems to be pretty quick with fixes. While the version that is current while I'm writing this (2.0.119.2) was broken one to two days ago thanks to a Youtube update, the dev has a post on his site stating the new version has been submitted and is awaiting approval.

J'utilise cette extensions depuis des années et elle est vraiment très bien. Elle fait tout ce qu'elle dit, le développeur est relativement réactif aux MàJ de youtube qui cassent des fonctionnalités. Recommande vivement.

Been using this extension since years now and its pretty awesome. It does everything it says, the programmer is quite reactive to youtube updates breaking things in the extension. I highly recommand.

Absolutely my favourite addon for Youtube, makes the veiwing experience much nicer and being able to tweak the experiance is awesome!

Expand is still not right. It expands the window but does not push the video info or the like/dislike buttons area down.

Guys and girls, please don't give him a bad rating because YouTube broke something again, that's not nicce...... He will fix it, give him time, he can't perform magic and wish it working!!!!!

extension broke today, cinema all black, expand does not work properly will edit when fixed
- fix on the way
fixed expand with this custom script:

document.getElementById("full-bleed-container").setAttribute("style","z-index: 1000;max-height:95vh;height:95vh");


change 95vh to whatever works for you