Perfect. Still wondering what those “privacy concerns” at https://github.com/nextcloud/server/pull/28079 look like (referring to HackerOne).
In my case I used the default enabledPreviewProviders but not configuring this in config.php at all. Once that PR was shipped HEIC preview support therefore got disabled for me. Wondering for a long time.
While it is great to have HEIC preview working again, I really want to clarify what’s the actual privacy/security risk of it e. g. if you expose your NC instance to the internet.