So turns out I already had a MapBox account set up in the site, and I think we were using that originally. At some point it seems to have defaulted to the Leaflet/Algolia. A few weeks ago, I realized my Pro account had expired, and had to renew and upgrade. Maybe happened then? This was the first time I noticed any major issue with the map locations.
I really should spend some time learning more about MapBox, cause there is probably a lot more we could be doing with these maps.