And I assume your DLNA settings for the server feeding that renderer in audio is "original format"?
Correct, cos DSD64 (2ch) play always correctly both ways (converted on the fly to PCM of course, of course

)
[update] DLNA settings are:
"Specified output format only when necessary",
DSF
vw,
(all the rest have default values - deleted and recreated the Original Format DLNA just to be sure).
The vw behaviour (stop at 1/8 of the song) is same between all 3 players.
When streaming to Denon AVR though (via DLNA of course, not via HDMI), the track length stay correct. DSD stream is received from AVR. It stops at 1/8 of the song.

It is very strange though.
Maybe something is wrong with my WavPack encoder? Dunno.