Plex choosing wrong audio stream as default

Plex Players Streaming Devices
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1

Server Version#: 1.42.2.10156
Player Version#: Roku TV (latest)

On one show only (Popeye the Sailor), Plex plays the secondary audio stream instead of the first, despite both being labeled as English, the first flagged as default, and the second flagged as a commentary track. After the first track is manually selected for the episode, the server seems to remember the choice for that episode the next time it is played.

Plex Media Server Logs_2025-11-16_18-51-15.zip (4.2 MB)

2

Let me guess: the primary audio is in mono, and the commentary in stereo, right?

3

After checking the MediaInfo, indeed they are. The show is from the Depression Era and was therefore never made in stereo.

4

I have filed a bug report.

6

Much obliged!