I found the flag to disable it, but I’m really curious why the decision was made in the first place. On Chrome and Firefox, l If you double click this example HTML5 : https://www.w3schools.com/html/html5_video.asp, it will go full screen. I’ve always wondered why sometimes click on a video would make it go fullscreen, it’s laggy and annoying for me, even on high-end laptops. On My Mac, as well as in Windows and Fedora VMs.
Click or double click? Those are different things. A click may be accidental, a double click unlikely.
Double click is not reserved for or expected to be anything else.
Going into fullscreen is a regular occurrence. Double click is a free binding to access this action without controls or control precision.
I don’t see how it being bound to double click has anything to do with it feeling laggy for you. If it’s about the transition blending duration I would agree it’s a bad default, but you can reduce that - and again, it has nothing to do with the interaction binding.