Dolby Vision Profile 8.1 with HDR10+ not working on LG webOS client

[Jollyrolly]

Hi there,

long time JF user here with clients on LG WebOS, AppleTV4k and Ugoos AM6b+ who started with xbmc on xbox360 around 20 years ago ;-)

Server: 10.10.7 on Windows 10 (Intel i3-12100, all SSD)
Client: LG WebOS (Version 23.22.02) on LG OLED48A29LA

Problem:
I have an issue with some Dolby Vision Profile 8.1 files not working on LG WEBOS. 
All files are:
- showing the Dolby Vision logo on TV
- are listed profile 8.1.
- are using ffmpeg remux

these two examples just show a completely green or black screen: 
  not_working_green_screen.txt (Size: 58.92 KB / Downloads: 24)
  not_working_black_screen.txt (Size: 119.82 KB / Downloads: 15)

Those two are working fine:
  working_bm.txt (Size: 101.07 KB / Downloads: 14)
  working_tlou.txt (Size: 29.21 KB / Downloads: 12) .

This is the server log:
  jf_log.txt (Size: 42.17 KB / Downloads: 16)

I'm not sure where I should look for differences in those logs and am glad for any help.

Kind regards