Potential bug in Video element (Firefox)

[striata]

There seems to be a bug in the Video element, which (in my hands) only occurs in Firefox. After entering full-screen mode, and exiting full-screen mode again by pressing Esc, it does not properly return to the non-full-screen mode. It does work correctly when exiting full-screen mode with the appropriate button in “video control bar”. This bug occurs in Firefox (latest version 74), both in normal and Private browsing, but neither in Chrome nor Edge
Example pages that have videos with the bug:
https://stria.tech/insectball/,
https://stria.tech/optodrum/
Mybe its a bug in Firefox, and not in the video element.
Can you replicate this?

[friech]

Hi @striata,

Thank you for writing in, X and PRO theme utilizes the native media player provided by Wordpress. It seems to be a bug (or just need updating) from Wordpress.

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I could not find any new and relevant information about this error, though I’ve submitted this to our issue tracker so the developers will be made aware of it, but please don’t get your hopes high as this is an issue with Wordpress core file and Firefox we might not able to have a solution for this.

Cheers!

[friech]

Here’s a reply from our Dev Team.

The MediaElementJS library of Wordpress still uses mozRequestFullScreen() even on its latest version. https://www.mediaelementjs.com/

From 2018, the prefixed API ( mozRequestFullScreen() ) are now non-prefixed ( requestFullScreen() )https://www.fxsitecompat.dev/en-CA/docs/2018/fullscreen-api-has-been-unprefixed/, and yes, it needs fixing within the MediaElementJS library.

The solution for now is to double-pressing the Escape key.

Thanks,

[striata]

Thank you for your reply! If I understand you correctly, this would effect any WordPress Site? Interesting.

[rad]

Hi @striata,

Yes, it will affect any Wordpress site.

Thanks!