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fix: revert DOM virtualization default to opt-in, fix gate RED (#6155) #4

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fix: revert DOM virtualization default to opt-in, fix gate RED (#6155) #4

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857632c
perf(transcript): enable DOM virtualization by default (re-enable #43…
webtecnica Jul 18, 2026
0cde42c
fix: revert DOM virtualization default to opt-in, fix gate RED (#6155)
webtecnica Jul 19, 2026
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6 changes: 4 additions & 2 deletions static/boot.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3163,8 +3163,10 @@ window._mirrorSpeechSettingsFromServer=_mirrorSpeechSettingsFromServer;
window._hideEmptyStateSuggestions=s.hide_empty_state_suggestions===true;
applyEmptyStateSuggestionPref();
// #4343: transcript virtualization is EXPERIMENTAL/opt-IN (default OFF).
// It caused scroll-up flicker on long sessions, so it's off for everyone
// unless explicitly opted in; long transcripts render in full by default.
// #4346 Phase B (footer-jitter suppression during virtual-scroll
// measurement re-renders) resolved the scroll-up flicker root cause,
// but virtualization remains opt-in until battle-tested further.
// Users can explicitly enable it via Settings → virtualize_transcript.
window._virtualizeTranscript=s.virtualize_transcript===true;
window._showTps=!!s.show_tps;
window._fadeTextEffect=!!s.fade_text_effect;
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