For some reason serveral large objects are missing on Wikimedia maps, e.g.:
- Lake Ladoga (https://www.openstreetmap.org/relation/1754729),
- Lake Onega (https://www.openstreetmap.org/relation/1308279),
- Lake Baikal (https://www.openstreetmap.org/relation/555716),
- Lake Balkhash (https://www.openstreetmap.org/relation/3367363) — east part etc.
Take a look at the map on https://en.wikivoyage.org/wiki/Saint_Petersburg_(district)
Ladoga Lake is not visible on the Wikimedia layer of the map on the left, but the lake is present on the Mapnik layer of the map on the right.
Regenerate zoom levels of the following geometries: