A clip in the post a reply answers (the "Replying to" card) goes full screen: a tap on it or its full-screen button used to do nothing, the full-screen handler taking it back out for a media pager that doesn't have it.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_013ZDf1cyCQLkfjftYhymZAg

1 files changed, 16 insertions, 4 deletions

diff --git a/src/features/messages.js b/src/features/messages.js
index 0c69f23..079c22c 100644
--- a/src/features/messages.js
+++ b/src/features/messages.js
@@ -7986,7 +7986,9 @@ export function messagesFeature(ctx) {
     // The player's own full-screen button on a feed clip: the pager, not
     // Chrome's full screen (no next clip there). The button stays on the bar
     // (left off, Chrome greys it out) and is taken over here.
-    if (el && !pager && el.matches && el.matches('.notes-feed video.note-video') && el.dataset.clip) {
+    // (only a clip the pager has: taken out of full screen for a pager that
+    // then wouldn't open, a quoted post's clip went nowhere at all)
+    if (el && !pager && el.matches && el.matches('.notes-feed video.note-video') && el.dataset.clip && clipItem(el, el.dataset.clip)) {
       const url = el.dataset.clip;
       Promise.resolve((document.exitFullscreen || document.webkitExitFullscreen || (() => {})).call(document)).catch(() => {})
         .then(() => { if (!pager && document.contains(el)) openClip(el, url); });
@@ -12425,12 +12427,22 @@ export function messagesFeature(ctx) {
   // (what the player's own full screen did). The screen isn't turned for a
   // wide clip — Adam would rather it play with bars and turn the phone
   // himself — so it follows the phone throughout.
-  function openClip(v, url) {
+  // The pager's item for a clip on the page, if the pager has it: a clip in
+  // the post a reply answers (its "Replying to" card) isn't one of the
+  // feed's own, and gets the browser's full screen instead.
+  function clipItem(v, url) {
     try {
       const on = pageRowOf(v);
-      if (!on) return false;
+      if (!on) return null;
       const it = feedMediaItems(on.c, 'videos').find((x) => (x.row.id === on.rowId || x.ev.id === on.rowId) && x.url === url);
-      if (!it) return false;
+      return it ? { on, it } : null;
+    } catch { return null; }
+  }
+  function openClip(v, url) {
+    try {
+      const found = clipItem(v, url);
+      if (!found) return false;
+      const { on, it } = found;
       tappedClips.add(url); // asked for by hand: no tap-to-play cover
       const at = v.currentTime || 0;
       v.pause();