the problem of incomplete audio still persists, at least, on the French platform of Pluto TV.
Biscoto
I tried Aruanas.s01e01 via FR and I could already see in the selection dialog
(3 different bitrates for same resolution) that it is multipart mpd and not m3u8.
Not only the log (with mpd url), but also full dl speed (no single segments) confirms this.
Resulting video is 40:02 - audio only 16:05, so I can confirm it's unchanged in France.
btw: My tested title from #12 in Germany is no longer offered in 1216x684 ..
.. so it's no m3u8 (with same SF version 6209) and the audio problem is back.