Improve webauthn popup close robustness

apps/browser-extension/src/entrypoints/background/PasskeyHandler.ts

@@ -27,6 +27,10 @@ import { browser, storage } from '#imports';
 const pendingRequests = new Map<string, {
   resolve: (value: any) => void;
   reject: (error: any) => void;
+  /**
+   * Store window ID in order to close the popup window from background script later.
+   */
+  windowId?: number;
 }>();
 
 // Store request data temporarily (to avoid URL length limits)
@@ -90,7 +94,7 @@ export async function handleWebAuthnCreate(data: any): Promise<any> {
 
     // Wait for response from popup
     return new Promise((resolve, reject) => {
-      pendingRequests.set(requestId, { resolve, reject });
+      pendingRequests.set(requestId, { resolve, reject, windowId: popup.id });
 
       // Clean up if popup is closed without response
       const checkClosed = setInterval(async () => {
@@ -149,7 +153,7 @@ export async function handleWebAuthnGet(data: any): Promise<any> {
 
     // Wait for response from popup
     return new Promise((resolve, reject) => {
-      pendingRequests.set(requestId, { resolve, reject });
+      pendingRequests.set(requestId, { resolve, reject, windowId: popup.id });
 
       // Clean up if popup is closed without response
       const checkClosed = setInterval(async () => {
@@ -185,6 +189,19 @@ export async function handlePasskeyPopupResponse(data: any): Promise<{ success:
     return { success: false };
   }
 
+  /**
+   * Close the popup window from background script to ensure it always works.
+   * Calling window.close() from the popup does not work in all browsers.
+   */
+  if (request.windowId) {
+    try {
+      await browser.windows.remove(request.windowId);
+    } catch (error) {
+      // Window might already be closed, ignore error
+      console.debug('Failed to close popup window:', error);
+    }
+  }
+
   // Clean up both maps
   pendingRequests.delete(requestId);
   pendingRequestData.delete(requestId);

apps/browser-extension/src/entrypoints/popup/pages/passkeys/PasskeyAuthenticate.tsx

@@ -285,13 +285,11 @@ const PasskeyAuthenticate: React.FC = () => {
       };
 
       // Send response back
+      // The background script will close the window (Safari-compatible)
       await sendMessage('PASSKEY_POPUP_RESPONSE', {
         requestId: request.requestId,
         credential
       }, 'background');
-
-      // Auto-close window on success
-      window.close();
     } catch (error) {
       console.error('PasskeyAuthenticate: Error during authentication', error);
       setLoading(false);
@@ -328,12 +326,11 @@ const PasskeyAuthenticate: React.FC = () => {
     // For 'once', we don't store anything - just bypass this one time
 
     // Tell background to use native implementation
+    // The background script will close the window (Safari-compatible)
     await sendMessage('PASSKEY_POPUP_RESPONSE', {
       requestId: request.requestId,
       fallback: true
     }, 'background');
-
-    window.close();
   };
 
   /**
@@ -345,12 +342,11 @@ const PasskeyAuthenticate: React.FC = () => {
     }
 
     // Tell background user cancelled
+    // The background script will close the window (Safari-compatible)
     await sendMessage('PASSKEY_POPUP_RESPONSE', {
       requestId: request.requestId,
       cancelled: true
     }, 'background');
-
-    window.close();
   };
 
   if (!request) {

apps/browser-extension/src/entrypoints/popup/pages/passkeys/PasskeyCreate.tsx

@@ -398,13 +398,11 @@ const PasskeyCreate: React.FC = () => {
             };
 
             // Send response back to background
+            // The background script will close the window (Safari-compatible)
             await sendMessage('PASSKEY_POPUP_RESPONSE', {
               requestId: request.requestId,
               credential: flattenedCredential
             }, 'background');
-
-            // Auto-close window on success
-            window.close();
           },
           /**
            * onError
@@ -450,12 +448,11 @@ const PasskeyCreate: React.FC = () => {
     // For 'once', we don't store anything - just bypass this one time
 
     // Tell background to use native implementation
+    // The background script will close the window (Safari-compatible)
     await sendMessage('PASSKEY_POPUP_RESPONSE', {
       requestId: request.requestId,
       fallback: true
     }, 'background');
-
-    window.close();
   };
 
   /**
@@ -467,12 +464,11 @@ const PasskeyCreate: React.FC = () => {
     }
 
     // Tell background user cancelled
+    // The background script will close the window (Safari-compatible)
     await sendMessage('PASSKEY_POPUP_RESPONSE', {
       requestId: request.requestId,
       cancelled: true
     }, 'background');
-
-    window.close();
   };
 
   if (!request) {