Steps to reproduce:
* https://atlas.landscapefor.eu/#lat=45.1365&lng=8.2672&zoom=9&archives=un-assaggio-di-atlasfor&map=osm
* https://beta.atlas.landscapefor.eu/#lat=45.1365&lng=8.2672&zoom=9&archives=un-assaggio-di-atlasfor&map=osm
* move the map
* move the map
Note that this, instead, already works without any flash:
* https://atlas.landscapefor.eu/#lat=45.1365&lng=8.2672&zoom=9&archives=un-assaggio-di-atlasfor
* https://beta.atlas.landscapefor.eu/#lat=45.1365&lng=8.2672&zoom=9&archives=un-assaggio-di-atlasfor