Icon picker not working and no Field (Html DivIcon) option in Manage Display

Have you been able to find a solution to get the icon picker working?
I may have a similar problem.
When adding a field for the map marker and try to use the "pick emoji" button, the site reloads, but I cannot select any emojis. Similar behavior happens when I try to select an emoji when creating/editing a content.
When clicking on the "pick emoji" button, the site reloads, but I cannot select anything.
However, when adding a character as default map marker it is shown on the map. So the map marker seems to work, only I cannot pick any emojis.
I don't see any errors in the drupal log or in the browser console.

Hi @freibadschwimmer, unfortunately, no, I haven't been able to solve this. In my case too, the markers worked but the emoji picker did not and I had to move away from this module.

Thanks for your reply.

As the extension otherwise works fine, my workaround for now is to visit the site https://emojipedia.org, search for and select an emoji there, and copy paste it into the map marker field.

The hook that adds the JS isn't being triggered. Try changing the function name in line 15 of leaflet_more_markers.module from:

leaflet_more_markers_field_widget_map_marker_widget_form_alter

to

leaflet_more_markers_field_widget_single_element_map_marker_widget_form_alter