Playback does not start without pushing play button on remote

Since the last update of Plex the playback does not start after pushing the playback button in the plex UI.
The screen goes black and plex is loading the file. But then stays black and I have to push the playback button
on the Apple Remote to start the playback. This only have to be done once. For each playback session.
Example:
TV series -> push start on UI -> push start on remote -> episode starts playback
Movie -> push start on UI - > push start on remote -> trailer starts playback -> movie starts playback

This happens on all my AppleTVs with the latest plex beta.

Same here. I also happened to update the AppleTV OS to the latest Beta, so I wasn’t sure if it was a coincidence or not. Which version of AppleTV OS are you currently running ?

Latest beta.

The same thing was reported in this thread https://forums.plex.tv/discussion/307160/plex-playback-problems-public-beta-2-tvos-11-3/p1

Yes I have the same issue with the last 2 builds I have to push play 2 or 3 times for it to start playing. At the same time I upgraded my system so I thought it might of been that, but I move it back to my old rig and it still doing it.

its getting quite annoying

This was an issue with the tvOS 11.3 beta. We believe that Apple may have fixed this issue with tvOS 11.3 developer beta 3. (Which should be a public beta later this week)

We’d love to hear back that this also fixes the issue for you.

fixed for me with 11.3 developer beta 3

Yes, fixed with new beta from Apple.