Item popup on map with cluster at location

[Raphaël Marée]

From an item details location, if one clicks on the location, the maps opens at the right location, but if there are multiple items at this location (hence a clustergroup), there is no item popup dialog shown.

Maybe a solution might come from here:
https://stackoverflow.com/questions/38824030/how-to-show-popup-on-click-leaflet-cluster-group
Leaflet/Leaflet.markercluster#123
https://github.com/Leaflet/Leaflet.markercluster#events