Reply to 5.2.8.300 - Detached videos stop playing when tab isn't in focus

pantantrollo
By pantantrollo,
I confirm positive:
https://www.youtube.com
https://ddn.disney.com
https://www.dailymotion.com
http://www.metacafe.com Negative:
https://www.veoh.com
http://www.viddler.com
Surely some more
I do not work with blink engine at https://vimeo.com
(On the previous stable version, with the same configuration, vimeo yes works