diff --git a/Sources/PlayerBridge.swift b/Sources/PlayerBridge.swift
index 917a727..e4d081b 100644
--- a/Sources/PlayerBridge.swift
+++ b/Sources/PlayerBridge.swift
@@ -279,6 +279,11 @@ final class PlayerBridge: ObservableObject {
     func toggleFullscreen() {
         #if os(macOS)
         if let fw = fullscreenWindow {
+            // 先断开 AVPlayerLayer → player 引用，避免 autorelease pool drain 时
+            // 与 CoreMedia 后台线程竞争 sFigNotificationCenterWeakListenerLinks
+            if let playerView = fw.contentView as? FullscreenPlayerView {
+                playerView.player = nil
+            }
             fw.close()
             fullscreenWindow = nil
             isFullscreen = false
@@ -445,6 +450,15 @@ class FullscreenPlayerView: NSView {
     
     override var acceptsFirstResponder: Bool { true }
     
+    // 安全网：视图从窗口移除时主动断开 player 引用
+    // 避免 CoreMedia 后台线程与 autorelease pool drain 竞争
+    override func viewWillMove(toWindow newWindow: NSWindow?) {
+        if newWindow == nil {
+            playerLayer.player = nil
+        }
+        super.viewWillMove(toWindow: newWindow)
+    }
+    
     override func mouseDown(with event: NSEvent) {
         if event.clickCount == 2 {
             NotificationCenter.default.post(name: .init("ExitFullscreen"), object: nil)