YouTube Embed: a single click on the play button should play the video

Actually, you need to perform two clicks on the YT Embed's play button, to play the video.
The first one seems to "activate" the Embed itself and only the second click on the play button will finally play the video.

This is a peeving little friction if you have multiple videos and you need to have a short look into them to find the right one.
-- This is a typical scenario in the Side Peak mode, when you try to find the needed Object.