JF 12-RC2 breaks part of the androidtv client

[mbramwel]

This issue respects the following points:

• I have discussed this issue in the Jellyfin forum and/or troubleshooting chat before opening this issue.
• This issue is not already reported on GitHub (I've searched it).
• I agree to follow Jellyfin's Code of Conduct.
• This report addresses only a single issue; If you encounter multiple issues, kindly create separate reports for each one.

Describe the bug

I am running ubuntu 26.04 with all updates applied (nightly script)
I have been running JF for a few years and always apply latest versions
I have a large video library with nested Movie folders

example:
/Movies shared as "Movies"
/Movies/Group1 shared as "Group1"
/Movies/Group2 shared as "Group2"

OK: The JF web server sees the 3 libraries on the home screen and all 3 have files
OK: The Wholphin v1.0.2 android client sees all 3 folders with videos
NOT-OK: Jellyfin app v0.19.9 up to recently saw everything but now the Group1 and Group2 folders are empty.

Something has changed and has broken the androidTV client from being able to see the content on those subfolders.

btw: If I search for a movie, it is found and played. This is obviously a display issue with AndroidTV interacting with RC2

Media info of the file

Media capabilities report

No response

Client logs

No response

FFmpeg logs

Application version

0.19.9

Where did you install the app from?

Amazon Appstore

Device information

firestick 4k max v2 AFTKRT

Android version

fire os 8.1.7.4

Jellyfin server version

12 RC2

Other sources

No response