the leaflet irls have changed, so firefox and edge will load the openstreetmap images only over http protocol

change

L.tileLayer('https://{s}.tile.osm.org/{z}/{x}/{y}.png', {
attribution: '© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
{color}}).addTo(map);

 

to

L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution: '© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
{color}}).addTo(map);

found in

eZ/Bundle/EzPublishCoreBundle/Resources/views/content_fields.html.twig

src/bundle/Resources/public/js/scripts/admin.location.load.map.js

after this run yarn encore....