Some fixes

Author: kblok

lib/PuppeteerSharp/Bidi/Core/BrowsingContext.cs

@@ -65,13 +65,15 @@ private BrowsingContext(UserContext userContext, BrowsingContext parent, string
 
     public event EventHandler<UserPromptEventArgs> UserPrompt;
 
+    public event EventHandler<WebDriverBiDi.Log.EntryAddedEventArgs> Log;
+
     public UserContext UserContext { get; }
 
     public string Id { get; }
 
     public string Url { get; private set; }
 
-    public bool IsClosed => _reason != null;
+    public bool IsClosed { get; private set; }
 
     public Session Session => UserContext.Browser.Session;
 
@@ -107,6 +109,13 @@ public static BrowsingContext From(UserContext userContext, BrowsingContext pare
 
     public void Dispose()
     {
+        if (IsClosed)
+        {
+            return;
+        }
+
+        IsClosed = true;
+
         _reason ??= "Browser was disconnected, probably because the session ended.";
         OnClosed(_reason);
         foreach (var context in _children.Values)
@@ -223,7 +232,7 @@ private void Initialize()
 
         Session.BrowsingContextContextDestroyed += (_, args) =>
         {
-            if (args.UserContextId != Id)
+            if (args.BrowsingContextId != Id)
             {
                 return;
             }