When embedding a YouTube video with the following HTML snippet video appear correctly:
<iframe src="https://www.youtube-nocookie.com/embed/ka-ZgwCXKho?rel=0&controls=0&showinfo=0" frameborder="0" allowfullscreen></iframe>When instead using the following HTML snippet, a black circle appears for few seconds with animation of type "pulse" near the Video Title inside the YouTube iframe.
<iframe data-dojo-attach-point="iframeNode" src="https://www.youtube.com/embed/ka-ZgwCXKho" allowfullscreen=""></iframe>- What is the reason for this behavior?
Notes:
- Same video open directly in YouTube does not present that animation.
- Issue appears on latest Chrome and Firefox.