message: BF: Fix row calculation.
diff: @@ -125,7 +125,7 @@ class WebMercatorTileLoader extends TileLoader {
  const quadId = new QuadId(parent.id);
  const level = quadId.level + 1;
  const column = quadId.column * 2;
  - const row = quadId.row * 3;
  + const row = quadId.row * 2;
  const props: WebMercatorTileProps[] = [];
  for (let i = 0; i < 2; i++) {
  