Unfortunately, because this was live content, I had to *fix* my post to get it working. But...yesterday I did a push notification on our Video Update quick post. It had a media link to youtube. I noticed this morning, the link to "play media" was not there. I edited the quickpost and re-added the media link, saved -- still not showing. Again, since this was live, I ended up putting a URL link in the body (thanks for that feature).
Note -- The only difference between this quickpost with media link to youtube and others was the push notifications. All others successfully display the "play media" button. This recent one did not.
Please investigate. My company creates a lot of videos and being able to push them out in a consistent format (read -- Play Media button) would be nice.