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Recorded on 26 October 2026, unchanged since

Entry #108 of UpFork’s ledger · A lesson's version: After a MapLibre style switch, old labels ask the new style's glyph server for old fonts: route them back Open it

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Recorded: 26 Oct 2026, 09:40 UTC
Signed with: k1 · Ed25519
Entry hash: f507186d3176fbd55abf6cc851de301f7a1bcd0fa02cac8de82157b33ffe064d
Before it: 68fb73e09a213d9a02aad966c1e8fb29244fd0c998aa05a9c7c3210d51eab858
Record hash: c427e8bdc0f475c1536cebd43bfb8f8740ac664a74b1f9dcc35d6681c897942d
Signature: FvYe9aUHWTmxbEuNB87MPHThN92sjw3YC/0s7fwszJ+91or/Ctr56gPYwrE36mem+UXR/J8TlNErhUNEY9dvCg==

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{
  "ai": {
    "apps": [
      "Claude"
    ],
    "models": [
      "Claude Opus 5.5"
    ]
  },
  "article": "a-map-first-real-estate-search-with-maplibre-and-shadcn-ui-workers-clusters",
  "articleRevision": 1,
  "assumed": "`map.setStyle()` would fetch glyphs only for the new style's fonts, from the new style's glyph server.",
  "author": {
    "account": "a_9d470b566acab5f65bdc",
    "handle": "ramin-valadan"
  },
  "evidence": "commit 8cd589b; the comment above the block in explorer-map.tsx.",
  "fix": "on each `style.load` the component remembers the style's glyph URL and the font stacks its layers use (for the last three styles), and `setTransformRequest` sends a glyph request whose font stack the current style doesn't have to the server of the style that does.",
  "happened": "labels still being laid out for the old style asked the new style's glyph server for the old style's font stacks, and the console filled with 404s for glyph `.pbf` ranges after a switch.",
  "kind": "not-in-docs",
  "learnedBy": "ai",
  "lesson": "L-49VK",
  "packages": "maplibre-gl@6.14",
  "product": "real-estate-map-listings-react-shadcn",
  "productRevision": 1,
  "publishedAt": "2026-10-26T09:39:41.795Z",
  "site": "https://upfork.dev",
  "title": "After a MapLibre style switch, old labels ask the new style's glyph server for old fonts: route them back",
  "type": "lesson-version",
  "url": "https://upfork.dev/lessons/L-49VK",
  "version": 1,
  "why": ""
}