This occurs on every other zoom step, if there is no change in aggregation.
Geohash grids are based on latitude-longitude bounds, so you would expect they remain elongated the further you go to the poles due to the "stretching"-artefact of the projection. The grid-cells should remain taller than wide.
Verified on master (5.0.*)
Tall (as expected)

Squashed (unexpected)

This occurs on every other zoom step, if there is no change in aggregation.
Geohash grids are based on latitude-longitude bounds, so you would expect they remain elongated the further you go to the poles due to the "stretching"-artefact of the projection. The grid-cells should remain taller than wide.
Verified on master (5.0.*)
Tall (as expected)

Squashed (unexpected)