Some CPT posts not showing on the map

I have some posts not showing on the map. I’ll post a quick screen vid in a private post, but this is what’s happening:

It seems that it might be the first that were added; it’s the oldest posts that aren’t on the map.

Is there a setting somewhere that limits how many posts the map will show? If so, where can I change it?

If I go into the post itself, it shows me on the map widget on the post, but not in the main map view; that post’s bubble doesn’t appear.

If I search by a specific location, then that post’s bubble appears on the map in the search results.

What am I missing?!