Why does the map become grey after scrolling past 10m?

[kramer65]

I've included the leaflet map into my django-admin. It works great, but I need high precision in the polygons I draw. When I currently scroll past 10m I get a grey screen though. Does anybody know what the reason for this is? Is this a bug, a setting, or simply a limitation of openstreetmap?

[Gagaro]

Do you have any error in the network query done to fetch the tiles?