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carlobeltrame / ecamp3 / 30017683433
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LAST BUILD BRANCH: debug-revert-reverted-react-pdf-upgrade
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Ran 23 Jul 2026 02:53PM UTC
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fix(print): keep compression disabled; revert temporary e2e repeat harness

Re-enabling compression hangs every client-print render in the Firefox worker,
even with the queueMicrotask patch: with compression pdfkit's per-object deflate
cascade floods the microtask queue, which starves the macrotask queue, so the
comlink postMessage round-trips (progress + result) never run and the worker
never returns. CI showed 8/8 firefox client-print tests failing with 0 renders
completing.

So the working combination is the queueMicrotask patch (fixes image zlib +
stream completion under load) together with compress=false (keeps the nextTick
volume low enough that macrotasks are not starved). Validated at 8/8 in CI. Keep
compression disabled; larger PDFs are the accepted trade-off.

Also revert the temporary 8x repeat harness back to the single downloads-PDF
test now that the fix is confirmed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KQ8DeKNRbyq2fLVAqdJfof
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