It is currently not possible to have a polygon that overlaps with the 180° line of longitude, or one of the poles. If such polygon is used as input, it will be interpreted as going the other way around, resulting in huge (and wrong!) areas being returned.
Workaround, if necessary: Create two polygons, one on each side of the 180° longitude, then merge resulting tile areas.
It is currently not possible to have a polygon that overlaps with the 180° line of longitude, or one of the poles. If such polygon is used as input, it will be interpreted as going the other way around, resulting in huge (and wrong!) areas being returned.
Workaround, if necessary: Create two polygons, one on each side of the 180° longitude, then merge resulting tile areas.