Found the culprit: I’m using Cloudflare’s Family DNS (1.1.1.3) and it’s blocking fonts.openmaptiles.org, which is breaking the clusters. It triggers a net::ERR_NAME_NOT_RESOLVED error.
Hi! I tested this page in 3 different browsers – Chrome, Edge and Brave – and in incognito, but in none of then the clusters appeared, just the markers are removed if I zoom out, and reappear if I zoom in.
