Comments in other instances not loading?

I've been browsing communities in other instances, and I noticed that sometimes not all comments show up when viewing from different instances.

For example, this post on !food@beehaw.org shows having 17 comments when viewed on beehaw, but only 6 when viewed from lemmy.one:

Here are the links to the post:

Is this just a quirk of how federation works or is it specifically a problem on my end?

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