Points on the clipped map disappear with increasing zoom level. My suspicion is this is due to the different processing used to generate the Netherlands map (large ⇒ pregenerated tile map) and the magpie moth map (small ⇒ all points map) meaning the clip mask doesn't quite align.
See report from the mailing list: https://lists.gbif.org/pipermail/api-users/2019-January/000583.html
And a live demo: https://labs.gbif.org/~mblissett/2019/01/nl-1967873.html
Points on the clipped map disappear with increasing zoom level. My suspicion is this is due to the different processing used to generate the Netherlands map (large ⇒ pregenerated tile map) and the magpie moth map (small ⇒ all points map) meaning the clip mask doesn't quite align.