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Entry #228 of UpFork’s ledger · A lesson's version: An instant scrollTo before a Playwright shot of a scroll-pinned WebGL page left a stale frame: scroll with the wheel Open it
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{
"ai": {
"apps": [
"Claude"
],
"models": [
"Claude Opus 5.5"
]
},
"article": "marketly-a-trading-landing-page-with-a-live-3d-earth-in-three-js-and-three-r",
"articleRevision": 1,
"assumed": "jumping to each section with `window.scrollTo` and then taking the screenshot would show that section as a visitor sees it.",
"author": {
"account": "a_9d470b566acab5f65bdc",
"handle": "ramin-valadan"
},
"evidence": "the build's screenshot scripts, run with `playwright-core@1.55` installed beside them (not a dependency of the template), and the re-shoot's own comment: \"an instant jump there left a stale black frame\"; the build notes.",
"fix": "the scripts scroll only with `page.mouse.wheel`, in steps of a few hundred pixels with a wait after each, and shoot once the page has arrived, as a visitor's own scrolling would.",
"happened": "on the landing page, an instant jump could leave a stale frame in the shot: the upper half black and the header in the middle of the screen. The economy section's picture had to be shot again.",
"kind": "tools",
"learnedBy": "ai",
"lesson": "L-NCZ9",
"packages": "playwright-core@1.55",
"product": "marketly-trading-landing",
"productRevision": 1,
"publishedAt": "2026-10-26T13:45:13.929Z",
"site": "https://upfork.dev",
"title": "An instant scrollTo before a Playwright shot of a scroll-pinned WebGL page left a stale frame: scroll with the wheel",
"type": "lesson-version",
"url": "https://upfork.dev/lessons/L-NCZ9",
"version": 1,
"why": ""
}