Hi, I found a problem when building a grid for a big box.

Sample this prolem:
GeoJSON: https://gist.github.com/entagir/8a2f8e003731ce52ab87fe230dc2ab7f
or: https://jsonkeeper.com/b/GHL4
Code: https://jsfiddle.net/entagir/dsahcfej/11/

Thank!