Map loading and clearing issues

[goord]

There are several issues with map layers when browsing through a storyline in 'unexpected' ways. These often involve browsing through the pages more quickly than the server can refresh the map. In general, we don't mind that the map remains empty while browsing quickly, as long as the correct layers are loaded when we stop.

This issue will be updated whenever we detect new ways to confuse the map.

• When quickly navigating pages backward, previous map layers remain visible and the map becomes a mess.
• When waiting for the map to load and closing the storyline, the general hotspot map gets messed up.