Some MP4 thumbnails not shown in 2022 and 2023

Thumbnails for my mp4-video files from Pixel 4 and Pixel 7 phones are not rendered/shown in Bridge 2023 and Bridge 2022 on Windows 11.

The files themself are playing back well in Windows 11.

But even imported in Adobe Premiere Elements, the files from Pixel 4 phones are audio only and the mp4 files from Pixel 7 are at least playable in PE.

Things I tried:
- "Purge Cache for Selection"

- Delete all files from AppData\Roaming\Adobe\Common\Media Cache Files

- Delete all files from AppData\Roaming\Adobe\Common\Media Cache