I have updated but maps behave in an erratic way, unfortunately. Maybe this is not related to this WordPress update, but the problem appeared in the last few days.
In most browsers and for most users they do not open at all and show “…Leaflet JS files are missing”. Or open very slowly.
In some cases maps open, but, if one clicks on the map, it “sticks” to the cursor and becomes unmanageable.
Open and try to zoom in the map with Edge or Safari: https://www.wondermondo.com/map/
Or, a map with fewer markers: https://www.wondermondo.com/blowholes-in-hawaii/
In spite of this – thanks for plugin, hope these problems can be solved!