A video keeps playing while the page repaints.

The page repaints in the background all the time — a zap count, a
profile landing, the thirty-second sync — and every repaint rebuilt a
post's YouTube box as poster-plus-play-button and patched the live box
into that shape, which threw the playing iframe out a few seconds into
every video. Once playing, the box is the viewer's: it is frozen against
the morph and left exactly as it stands.

Co-Authored-By: Claude Fable 5.1 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QYJfZ4A1TDCEY4Foq3CApR

1 files changed, 7 insertions, 0 deletions

diff --git a/src/features/messages.js b/src/features/messages.js
index 11f1a42..9a5d185 100644
--- a/src/features/messages.js
+++ b/src/features/messages.js
@@ -3049,6 +3049,13 @@ export function messagesFeature(ctx) {
           const box = e.currentTarget.parentElement;
           if (!box || box.dataset.playing) return;
           box.dataset.playing = '1';
+          // The page repaints in the background all the time (a zap count,
+          // a profile landing, the thirty-second sync), and every repaint
+          // rebuilds this box as poster + play button and patches the live
+          // one into that shape — which threw the playing iframe out a few
+          // seconds into every video. Once playing, the box is the viewer's
+          // and the morph leaves it exactly as it stands.
+          box._skipMorph = true;
           box.textContent = '';
           const f = document.createElement('iframe');
           f.src = src;