Plex + iPhone X HDMI out = BROKEN

When using iPhone 7 Plus HDMI out with Plex, video would play full screen regardless how the phone was physically oriented. When iPhone X HDMI out with Plex, the entire app mirrors regardless how the phone is physically oriented and landscape mode causes the video area within the app to be replaced with the media’s cover art. Netflix doesn’t not behave this way. Netflix will automatically send video out full screen. Help