Vlad partially. Sometimes they work sometimes user needs to interact with the player to get them work again.
Like for example: Player goes fullscreen on first keyboard shortcut trigger without any problem. Mute only works if the user stops and plays the video again.
But on Orion works nothing,
Edit: Just tried again and Mute(m) shortcut wotking flawless on Orion. Fullscreen(f) not working at all.