I have now seen the same occurence across multiple browsers.
Same three locations show up even if i do not allow check off location sensor. So Location sensor has nothing to do with it.
1) Do you have Featured or ranking on those same three locations? If so look under results panel, bottom order by,. Always show Featured…is it checked off?
2) Smush lazy load, deactivate it when you debug, smush may be in conflict with our plugin
3) You still have multiple errors on that page, i cannot troubleshoot while those errors exist, One second the page loads with those three locations showing and other times it doesnt…you need to clean up the caching and the errors