I've encountered a rather rare but a bit game-breaking issue. When I played using GeoJSON with my friends and family, sometimes it happened so that the person who set up the room could play normally but all the other players were locked in place, unable to move. For some reason, different street view spots were chosen for room owner and other players (and the other players were placed into static panorama view without the possibility to move). Luckily, I recall one such spot that reliably has this issue every time, so that can be used to debug the issue.
{"type":"FeatureCollection","crs":{"type":"name","properties":{"name":"EPSG:4326"}},"features":[{"type":"Feature","id":15,"geometry":{"type":"Point","coordinates":[12.754708932182819,50.187283464784805]},"properties":{"OBJECTID":15,"JMENO":"Loket","NATOCENI":0,"DATA50_K":"1450000","DATA50_P":"hrad"}}]}