I’m not suspecting a bug, but didn’t just find the answer to whether thumbs are equally handled as posters when no poster is found.
Kodi creates a thumb preview if no poster is found and displays that as the cover (poster). As my home movies have no posters, but only thumbs, kodi reads those thumbs and displays them. Yatse only displays posters and fanart, but nothing (only yatse’s default image when no artwork exists), if only thumbs are available.
So kodi either doesn’t send them or yatse doesn’t ask them, that’s my understanding so far.
What is yatse explicitly asking kodi for as a preview?
Btw, if I cache the artwork from ytase settings, the preview count it is caching is far less than my movie count in total, although all movies have either poster or thumb available