You should file a ticket at support.mendix.com with a test project that shows the issue.
I finally understood the video only dissapeared from an auto-fit content lay-out partition, which did not happen before.
Hello Anneke,
Did you get a response?
Im trying it too, pastet the URL in ‘Video URL’ but i get an → Failed to Load the Video :(
i thought it do not work because im trying it @localhost.
Best Regards