diff --git a/src/Microsoft.TryDotNet.IntegrationTests/EditorTests.cs b/src/Microsoft.TryDotNet.IntegrationTests/EditorTests.cs
index 299f673a7..5f64f1ae5 100644
--- a/src/Microsoft.TryDotNet.IntegrationTests/EditorTests.cs
+++ b/src/Microsoft.TryDotNet.IntegrationTests/EditorTests.cs
@@ -27,7 +27,7 @@ public async Task can_load_monaco_editor()
     {
         var page = await NewPageAsync();
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor?enableLogging=true");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
         var isVisible = await page.Locator("div[role = \"code\"]").IsVisibleAsync();
 
         await page.TestScreenShotAsync();
@@ -52,7 +52,7 @@ await page.RouteAsync("**/*", async route =>
         });
 
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor?enableLogging=true");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
         await page.Locator("div[role = \"code\"]").IsVisibleAsync();
 
         await page.TestScreenShotAsync();
@@ -66,7 +66,7 @@ public async Task wasm_runner_is_not_visible_to_screenReaders()
         var page = await NewPageAsync();
 
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
         await page.Locator("div[role = \"code\"]").IsVisibleAsync();
 
         await page.TestScreenShotAsync();
@@ -83,7 +83,7 @@ public async Task wasm_runner_is_not_part_of_tab_navigation()
         var page = await NewPageAsync();
 
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor?enableLogging=true");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
         await page.Locator("div[role = \"code\"]").IsVisibleAsync();
 
         await page.TestScreenShotAsync();
@@ -105,7 +105,7 @@ public async Task notifies_when_editor_is_ready()
         var readyAwaiter = interceptor.AwaitForMessage("HostEditorReady");
 
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor?enableLogging=true");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
         var found = await readyAwaiter;
 
         await page.TestScreenShotAsync();
@@ -120,7 +120,7 @@ public async Task can_open_project()
         await interceptor.InstallAsync(page);
 
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor?enableLogging=true");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
 
         var projectLoadedAwaiter = interceptor.AwaitForMessage("ProjectOpened");
 
@@ -151,7 +151,7 @@ public async Task can_open_document()
         var interceptor = new MessageInterceptor();
         await interceptor.InstallAsync(page);
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor?enableLogging=true");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
 
         var projectLoadedAwaiter = interceptor.AwaitForMessage("ProjectOpened");
         var randomValue = Guid.NewGuid().ToString("N");
@@ -195,7 +195,7 @@ public async Task can_open_document_and_populate_editor_from_region()
         var interceptor = new MessageInterceptor();
         await interceptor.InstallAsync(page);
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor?enableLogging=true");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
 
         var projectLoadedAwaiter = interceptor.AwaitForMessage("ProjectOpened");
 
@@ -239,7 +239,7 @@ public async Task minimap_is_not_visible()
         var interceptor = new MessageInterceptor();
         await interceptor.InstallAsync(page);
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor?enableLogging=true");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
         await page.TestScreenShotAsync();
         var minimap = page.Locator("div.minimap");
         var isHidden = await minimap.IsHiddenAsync();
@@ -253,7 +253,7 @@ public async Task can_show_minimap()
         var interceptor = new MessageInterceptor();
         await interceptor.InstallAsync(page);
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
         await page.DispatchMessage(new
         {
             type = "ConfigureMonacoEditor",
@@ -278,7 +278,7 @@ public async Task can_configure_theme()
         var interceptor = new MessageInterceptor();
         await interceptor.InstallAsync(page);
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor?enableLogging=true");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
         await page.DispatchMessage(new
         {
             type = "ConfigureMonacoEditor",
@@ -299,7 +299,7 @@ public async Task when_user_code_in_editor_diagnostics_are_produced()
         var interceptor = new MessageInterceptor();
         await interceptor.InstallAsync(page);
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor?enableLogging=true");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
 
         var projectLoadedAwaiter = interceptor.AwaitForMessage("ProjectOpened");
         var documentOpenedAwaiter = interceptor.AwaitForMessage("DocumentOpened");
@@ -367,7 +367,7 @@ public async Task when_user_code_in_editor_is_executed_display_events_are_produc
         var interceptor = new MessageInterceptor();
         await interceptor.InstallAsync(page);
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor?enableLogging=true");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
         
         var projectLoadedAwaiter = interceptor.AwaitForMessage("ProjectOpened");
         var documentOpenedAwaiter = interceptor.AwaitForMessage("DocumentOpened");
@@ -425,7 +425,7 @@ public async Task user_typing_code_gets_completion()
         var interceptor = new MessageInterceptor();
         await interceptor.InstallAsync(page);
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor?enableLogging=true");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
 
         var projectLoadedAwaiter = interceptor.AwaitForMessage("ProjectOpened");
         var documentOpenedAwaiter = interceptor.AwaitForMessage("DocumentOpened");
@@ -483,7 +483,7 @@ public async Task user_typing_code_gets_signatureHelp()
         var interceptor = new MessageInterceptor();
         await interceptor.InstallAsync(page);
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor?enableLogging=true");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
 
         var projectLoadedAwaiter = interceptor.AwaitForMessage("ProjectOpened");
         var documentOpenedAwaiter = interceptor.AwaitForMessage("DocumentOpened");
@@ -547,7 +547,7 @@ public async Task when_user_code_in_editor_is_executed_it_produces_runResult_eve
         var interceptor = new MessageInterceptor();
         await interceptor.InstallAsync(page);
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor?enableLogging=true");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
 
         var projectLoadedAwaiter = interceptor.AwaitForMessage("ProjectOpened");
         var documentOpenedAwaiter = interceptor.AwaitForMessage("DocumentOpened");
@@ -604,7 +604,7 @@ public async Task when_user_code_in_editor_is_executed_it_produces_runResult_eve
         var interceptor = new MessageInterceptor();
         await interceptor.InstallAsync(page);
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor?enableLogging=true");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
 
         var projectLoadedAwaiter = interceptor.AwaitForMessage("ProjectOpened");
         var documentOpenedAwaiter = interceptor.AwaitForMessage("DocumentOpened");
@@ -664,7 +664,7 @@ public async Task user_code_in_editor_is_executed()
         await interceptor.InstallAsync(page);
         await page.GotoAsync((await Services.GetTryDotNetServerAsync()).Url + "editor?enableLogging=true");
 
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForEditorLoadedAsync();
         var projectLoadedAwaiter = interceptor.AwaitForMessage("ProjectOpened");
         var documentOpenedAwaiter = interceptor.AwaitForMessage("DocumentOpened");
         
diff --git a/src/Microsoft.TryDotNet.IntegrationTests/PageExtensions.cs b/src/Microsoft.TryDotNet.IntegrationTests/PageExtensions.cs
index 46a04e597..816e30a63 100644
--- a/src/Microsoft.TryDotNet.IntegrationTests/PageExtensions.cs
+++ b/src/Microsoft.TryDotNet.IntegrationTests/PageExtensions.cs
@@ -91,6 +91,22 @@ public static async Task<string> GetEditorContentAsync(this IFrameLocator iframe
         return text;
     }
 
+    /// <summary>
+    /// Waits for the Monaco editor page to be fully interactive.
+    /// Uses <see cref="LoadState.Load"/> (reliable on all browsers) followed by an explicit
+    /// wait for the Monaco editor container, avoiding the <see cref="LoadState.NetworkIdle"/>
+    /// state that Firefox never reaches when Blazor WASM keeps background connections open.
+    /// </summary>
+    public static async Task WaitForEditorLoadedAsync(this IPage page)
+    {
+        await page.WaitForLoadStateAsync(LoadState.Load);
+        await page.Locator(@"div[role=""code""]").WaitForAsync(new LocatorWaitForOptions
+        {
+            State = WaitForSelectorState.Visible,
+            Timeout = 90_000f
+        });
+    }
+
     public static async Task ClearMonacoEditor(this IPage page)
     {
         var editor = page.Locator(@"textarea[role = ""textbox""]");
diff --git a/src/Microsoft.TryDotNet.IntegrationTests/PlaywrightTestBase.cs b/src/Microsoft.TryDotNet.IntegrationTests/PlaywrightTestBase.cs
index f295c9909..fdd878333 100644
--- a/src/Microsoft.TryDotNet.IntegrationTests/PlaywrightTestBase.cs
+++ b/src/Microsoft.TryDotNet.IntegrationTests/PlaywrightTestBase.cs
@@ -33,7 +33,7 @@ protected async Task<IPage> NewPageAsync()
     {
         var playwright = await Services.GetPlaywrightAsync();
         var page = await playwright.Browser.NewPageAsync();
-        // Firefox needs more time to reach NetworkIdle due to Blazor WASM loading.
+        // Give Firefox extra time for GotoAsync and other navigation operations.
         page.SetDefaultNavigationTimeout(90_000f);
         return page;
     }
diff --git a/src/Microsoft.TryDotNet.IntegrationTests/TryDotNetJsIntegrationTests.cs b/src/Microsoft.TryDotNet.IntegrationTests/TryDotNetJsIntegrationTests.cs
index c85d64775..28bbfae53 100644
--- a/src/Microsoft.TryDotNet.IntegrationTests/TryDotNetJsIntegrationTests.cs
+++ b/src/Microsoft.TryDotNet.IntegrationTests/TryDotNetJsIntegrationTests.cs
@@ -38,7 +38,7 @@ public async Task loads_trydotnet_editor()
 
         var pageUri = new Uri(QueryHelpers.AddQueryString(new Uri(learnRoot,"DocsHost.html").ToString(), param!));
         await page.GotoAsync(pageUri.ToString());
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForLoadStateAsync(LoadState.Load);
         
         await page.FindEditor();
     }
@@ -62,7 +62,7 @@ public async Task can_load_code()
 
         var pageUri = new Uri(QueryHelpers.AddQueryString(new Uri(learnRoot, "DocsHost.html").ToString(), param!));
         await page.GotoAsync(pageUri.ToString());
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForLoadStateAsync(LoadState.Load);
 
         var dotnetOnline = new DotNetOnline(page);
 
@@ -93,7 +93,7 @@ public async Task outputs_are_rendered()
 
         var pageUri = new Uri(QueryHelpers.AddQueryString(new Uri(learnRoot, "DocsHost.html").ToString(), param!));
         await page.GotoAsync(pageUri.ToString());
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+        await page.WaitForLoadStateAsync(LoadState.Load);
 
         var dotnetOnline = new DotNetOnline(page);
 
diff --git a/src/Microsoft.TryDotNet.IntegrationTests/WasmRunnerTests.cs b/src/Microsoft.TryDotNet.IntegrationTests/WasmRunnerTests.cs
index 81d4f4c6c..64f5a3c9c 100644
--- a/src/Microsoft.TryDotNet.IntegrationTests/WasmRunnerTests.cs
+++ b/src/Microsoft.TryDotNet.IntegrationTests/WasmRunnerTests.cs
@@ -25,8 +25,8 @@ public async Task can_load_wasmrunner()
     {
         var page = await NewPageAsync();
         await page.GotoAsync(await TryDotNetUrlAsync() + "wasmrunner");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
-        await page.Locator(@"id=wasmRunner-sentinel").IsHiddenAsync();
+        await page.WaitForLoadStateAsync(LoadState.Load);
+        await page.Locator(@"id=wasmRunner-sentinel").WaitForAsync(new LocatorWaitForOptions { State = WaitForSelectorState.Attached, Timeout = 90_000f });
 
         await page.TestScreenShotAsync();
     }
@@ -36,8 +36,8 @@ public async Task can_run_assembly()
     {
         var page = await NewPageAsync();
         await page.GotoAsync(await TryDotNetUrlAsync() + "wasmrunner");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
-        await page.Locator(@"id=wasmRunner-sentinel").IsHiddenAsync();
+        await page.WaitForLoadStateAsync(LoadState.Load);
+        await page.Locator(@"id=wasmRunner-sentinel").WaitForAsync(new LocatorWaitForOptions { State = WaitForSelectorState.Attached, Timeout = 90_000f });
 
         var messages = await page.ExecuteAssembly(
             @"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"
@@ -56,8 +56,8 @@ public async Task can_run_assembly_2()
     {
         var page = await NewPageAsync();
         await page.GotoAsync(await TryDotNetUrlAsync() + "wasmrunner");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
-        await page.Locator(@"id=wasmRunner-sentinel").IsHiddenAsync();
+        await page.WaitForLoadStateAsync(LoadState.Load);
+        await page.Locator(@"id=wasmRunner-sentinel").WaitForAsync(new LocatorWaitForOptions { State = WaitForSelectorState.Attached, Timeout = 90_000f });
 
         var messages = await page.ExecuteAssembly(
             @"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"
@@ -76,8 +76,8 @@ public async Task can_run_assembly_and_produce_output()
     {
         var page = await NewPageAsync();
         await page.GotoAsync(await TryDotNetUrlAsync() + "wasmrunner");
-        await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
-        await page.Locator(@"id=wasmRunner-sentinel").IsHiddenAsync();
+        await page.WaitForLoadStateAsync(LoadState.Load);
+        await page.Locator(@"id=wasmRunner-sentinel").WaitForAsync(new LocatorWaitForOptions { State = WaitForSelectorState.Attached, Timeout = 90_000f });
 
         var messages = await page.ExecuteAssembly(
             @"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"