setSites is never called?

[rpayanm]

Package containing the bug

next (Drupal module)

Describe the bug

I had a question about caching:
#848

And I was debugging the code, and the sites variable is empty here:

https://git.drupalcode.org/project/next/-/blob/2.x/src/Plugin/Next/Revalidator/CacheTag.php?ref_type=heads#L53

It is later used here to invalidate the cache:

https://git.drupalcode.org/project/next/-/blob/2.x/src/Plugin/Next/Revalidator/CacheTag.php?ref_type=heads#L68

I created a new field in my article content type to assign the my_app site, but it did not work. I could not find where the setSites function is called:

https://git.drupalcode.org/project/next/-/blob/2.x/src/Event/EntityActionEvent.php?ref_type=heads#L112

Is this a a bug?