AC3, E-AC3 and DTS not supported on Pixel 7 Pro

Plex Players Mobile Devices
2

PMS: 1.29.1.6316
Android Mobile: 9.10.1.36037 (beta)

FWIW, I’ve a Pixel 6a / Android 13.

AC3 & DTS direct play. EAC3 transcodes.

My previous phone, a Pixel 3a XL, had the same behavior.

Plex app settings:

Settings -> Advanced
  Audio -> Audio Boost = None
  Player 
    Audio Passthrough = Disabled
    Optional Audio Support = None

Edit: Passthrough = HDMI made no difference.

Pixel 7 Pro - Playback Issues