Fix sharing

index.tsx

@@ -31,6 +31,8 @@ if (!rootElement) {
   throw new Error("Could not find root element to mount to");
 }
 
+const shouldSkipSigninCallback = !window.location.pathname.startsWith('/callback');
+
 const onSigninCallback = () => {
   window.history.replaceState({}, document.title, '/');
 };
@@ -41,6 +43,7 @@ root.render(
     <BrowserRouter>
       <AuthProvider 
         {...oidcConfig}
+        skipSigninCallback={shouldSkipSigninCallback}
         onSigninCallback={onSigninCallback}
         onRemoveUser={() => {
           localStorage.removeItem('kaboot_session');