From 20be4181a2c24298ed0258de73bf9624c6e483ed Mon Sep 17 00:00:00 2001
From: "microsoft-playwright-automation[bot]"
 <203992400+microsoft-playwright-automation[bot]@users.noreply.github.com>
Date: Wed, 16 Sep 2026 13:57:31 +0000
Subject: [PATCH] feat(firefox): roll to r1548

---
 .../firefox/juggler/NetworkObserver.js        | 12 +++++++++++
 .../firefox/juggler/content/Runtime.js        | 21 +++++++++----------
 packages/playwright-core/browsers.json        |  2 +-
 3 files changed, 23 insertions(+), 12 deletions(-)

diff --git a/browser_patches/firefox/juggler/NetworkObserver.js b/browser_patches/firefox/juggler/NetworkObserver.js
index b472f65a83cd1..bc4428b996d24 100644
--- a/browser_patches/firefox/juggler/NetworkObserver.js
+++ b/browser_patches/firefox/juggler/NetworkObserver.js
@@ -185,6 +185,8 @@ class NetworkRequest {
     if (this.redirectedFromId) {
       // Redirects are not interceptable.
       this._sendOnRequest(false);
+      // Everything we need from the previous request has been inherited above.
+      redirectedFrom._releaseReferences();
     }
   }
 
@@ -447,6 +449,16 @@ class NetworkRequest {
     }
 
     delete this._responseBodyChunks;
+    this._releaseReferences();
+  }
+
+  // Firefox may keep this object alive long after the request has finished
+  // through callbacks or delegates, and we don't want to retain the page/window/context.
+  _releaseReferences() {
+    this.httpChannel = undefined;
+    this._originalListener = undefined;
+    this._pageNetwork = undefined;
+    this._interceptedChannel = undefined;
   }
 
   _shouldIntercept() {
diff --git a/browser_patches/firefox/juggler/content/Runtime.js b/browser_patches/firefox/juggler/content/Runtime.js
index ec5c9487a76af..7793bb9bb952f 100644
--- a/browser_patches/firefox/juggler/content/Runtime.js
+++ b/browser_patches/firefox/juggler/content/Runtime.js
@@ -553,18 +553,17 @@ class ExecutionContext {
 
   getObjectProperties(objectId) {
     if (!this._remoteObjects.has(objectId))
-      throw new Error('Cannot find object with id = ' + arg.objectId);
+      throw new Error('Cannot find object with id = ' + objectId);
     const result = [];
-    for (let obj = this._remoteObjects.get(objectId); obj; obj = obj.proto) {
-      for (const propertyName of obj.getOwnPropertyNames()) {
-        const descriptor = obj.getOwnPropertyDescriptor(propertyName);
-        if (!descriptor.enumerable)
-          continue;
-        result.push({
-          name: propertyName,
-          value: this._createRemoteObject(descriptor.value),
-        });
-      }
+    const obj = this._remoteObjects.get(objectId);
+    for (const propertyName of obj.getOwnPropertyNames()) {
+      const descriptor = obj.getOwnPropertyDescriptor(propertyName);
+      if (!descriptor.enumerable)
+        continue;
+      result.push({
+        name: propertyName,
+        value: this._createRemoteObject(descriptor.value),
+      });
     }
     return result;
   }
diff --git a/packages/playwright-core/browsers.json b/packages/playwright-core/browsers.json
index af9e96047b801..d8df150a1c7a4 100644
--- a/packages/playwright-core/browsers.json
+++ b/packages/playwright-core/browsers.json
@@ -17,7 +17,7 @@
     },
     {
       "name": "firefox",
-      "revision": "1546",
+      "revision": "1548",
       "installByDefault": true,
       "browserVersion": "155.0",
       "title": "Firefox"