src/components/messageStream/bubbles/VideoBubble.tsx

@@ -87,6 +87,7 @@ function VideoAttachmentCard({
             controls
             playsInline
             autoPlay
+            onClick={(e) => e.stopPropagation()}
             className="absolute inset-0 h-full w-full"
           />
           <AttachmentDownloadPill

src/components/messageStream/overlays/VideoPlayer.tsx

@@ -70,11 +70,36 @@ function PlayerView({
       if (e.key === "Escape") onClose();
     };
     window.addEventListener("keydown", onKey);
-    const prevOverflow = document.body.style.overflow;
-    document.body.style.overflow = "hidden";
+
+    // iOS-compatible scroll lock: pin the body in place at the current scroll
+    // offset, then restore both styles and scroll position on cleanup. Plain
+    // `overflow: hidden` doesn't work on iOS Safari and can reset scroll to 0.
+    const scrollY = window.scrollY;
+    const body = document.body;
+    const prev = {
+      position: body.style.position,
+      top: body.style.top,
+      left: body.style.left,
+      right: body.style.right,
+      width: body.style.width,
+      overflow: body.style.overflow,
+    };
+    body.style.position = "fixed";
+    body.style.top = `-${scrollY}px`;
+    body.style.left = "0";
+    body.style.right = "0";
+    body.style.width = "100%";
+    body.style.overflow = "hidden";
+
     return () => {
       window.removeEventListener("keydown", onKey);
-      document.body.style.overflow = prevOverflow;
+      body.style.position = prev.position;
+      body.style.top = prev.top;
+      body.style.left = prev.left;
+      body.style.right = prev.right;
+      body.style.width = prev.width;
+      body.style.overflow = prev.overflow;
+      window.scrollTo(0, scrollY);
     };
   }, [onClose]);