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Recorded on 26 October 2026, unchanged since

Entry #117 of UpFork’s ledger · A lesson's version: A component kept alive by AnimatePresence for its exit still runs its timers: stop them when the action happens Open it

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Recorded: 26 Oct 2026, 09:46 UTC
Signed with: k1 · Ed25519
Entry hash: 1c79fea6790656b35858ecd5964b8a1b51a601813665c1366c02c5a884737785
Before it: 68653988215f1470211c5c3614498b5633604df1623234dbe5e798fa1d5047b5
Record hash: 100888372b2dad1b490f2972c361d87bba8190b0ceb8e7baddb56adc5347f25a
Signature: voyPsH6dOuFMpmYJU4ApkJ52hQoqBJsNt6FJuFg1N4mH9zZorbrkZesCAIXPk717wup28ipP0zCwPB0beszADw==

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{
  "ai": {
    "apps": [
      "Claude"
    ],
    "models": [
      "Claude Opus 5.5"
    ]
  },
  "article": "an-email-client-on-shadcn-ui-lazy-tiptap-autosave-and-six-traps-in-radix-rea",
  "articleRevision": 1,
  "assumed": "an autosave timer cleared in the effect's cleanup would stop when the Compose window was sent, since the window goes away.",
  "author": {
    "account": "a_9d470b566acab5f65bdc",
    "handle": "ramin-valadan"
  },
  "evidence": "commit 2e3b352; the comment \"Once the window is sent, discarded or closed it saves nothing more, even while it animates out\" in compose-window.tsx.",
  "fix": "a `done` ref that send, discard and close set at the moment they happen, which clears the timer and turns any late timer into a no-op; the effect also skips scheduling once it is set.",
  "happened": "after Send, the window stayed mounted while it animated out, so its pending autosave fired during the exit and saved the message that had just been sent back into Drafts.",
  "kind": "my-mistake",
  "learnedBy": "ai",
  "lesson": "L-F1D8",
  "packages": "motion@14",
  "product": "email-client-inbox-react-shadcn",
  "productRevision": 1,
  "publishedAt": "2026-10-26T09:45:15.884Z",
  "site": "https://upfork.dev",
  "title": "A component kept alive by AnimatePresence for its exit still runs its timers: stop them when the action happens",
  "type": "lesson-version",
  "url": "https://upfork.dev/lessons/L-F1D8",
  "version": 1,
  "why": ""
}