desktop: pasted image breaks and send fails with "Failed to fetch" after the clipboard temp file is deleted #62052

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1. opencodejr commented on Nov 5, 2026

   

   opencodejrBot

   on Nov 5, 2026

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   Thanks for the detailed report and analysis. I can confirm the send failure.

   I ran the app's draft-store code (packages/app/src/runtime/persistence/drafts.ts) in headless Chromium. I didn't run the Windows desktop app or WeType. The steps:

   1. Load a PNG from disk as a disk-backed File and pass it to putBlob, as the composer does on paste.
   2. Check that blobDataUrl, the function used when sending, returns the image.
   3. Delete the file on disk.
   4. Call blobDataUrl again. It now fails with NotFoundError: A requested file or directory could not be found…, even though the draft store still holds the copied bytes.

   The retained blob and object URL point at the original File rather than the copy that was saved, as you described. It happens on v2.2.5 and on the latest dev (893e8dc). In my headless run the thumbnail kept showing (probably Chromium's image cache), so I could only confirm the send failure, not the broken thumbnail. The script below reproduces it.

   Reproduction script (repro.mjs)

   // Usage: node repro.mjs <opencode checkout>  (bundles packages/app drafts.ts for the browser and runs it in Chromium)
   import { chromium } from "playwright"
   import { execSync } from "node:child_process"
   import fs from "node:fs"
   const repo = process.argv[2] ?? "/workspace/repo"
   const dir = "/workspace/repro"
   fs.copyFileSync(`${dir}/entry.ts`, `${repo}/packages/app/src/__repro_entry.ts`)
   execSync(`cd ${repo}/packages/app && bun build src/__repro_entry.ts --target browser --outfile ${dir}/out/bundle.js`, { stdio: "inherit" })
   fs.rmSync(`${repo}/packages/app/src/__repro_entry.ts`)
   fs.writeFileSync(`${dir}/out/index.html`, `<input type=file id=f><script src="bundle.js"></script>`)
   // 1x1 PNG standing in for the clipboard temp file (WeType ClipboardTmp)
   const tmp = "/tmp/opencode/ClipboardTmp-A.png"
   fs.writeFileSync(tmp, Buffer.from("iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8BQDwAEhQGAhKmMIQAAAABJRU5ErkJggg==", "base64"))
   const browser = await chromium.launch({ args: ["--allow-file-access-from-files"] })
   const page = await browser.newPage()
   await page.goto(`file://${dir}/out/index.html`)
   await page.setInputFiles("#f", tmp) // disk-backed File, like a pasted clipboard temp file
   await page.evaluate(() => paste(document.querySelector("#f").files[0]))
   console.log("before delete:", await page.evaluate(() => check()))
   fs.unlinkSync(tmp) // the IME deletes the temp file on the next copy
   console.log("after delete: ", await page.evaluate(() => check()))
   await browser.close()

   Run it: bun repro.mjs
2. opencodejr

   added

   reproduced

   on Nov 5, 2026
3. usrnk1

   closed this as completedin #62057on Nov 6, 2026