It is a first for me, a movie don't want to be played using the french audio stream. VLC is reading it fine, and Plex WEB too.
First play (french audio as default) : playing english audio, switchting to english : english audio, switch back to french : still english audio.
PMS and Client on the same local network.
I will have to check but I am fearly sure that the media is transcoded.
PMS v126.96.36.19966 on FreeBSD.
Roku Plex client v188.8.131.5287-9c86a612-
Media XML attached.