fix: regExp

src/altinn-app-frontend/src/common/hooks/useFormLayoutHistory.ts

@@ -70,15 +70,16 @@ function formLayoutHistory({
     history.location,
     pathToRoute,
   );
-  const browserIsOnRootPath =
-    !pageIdFromLocation || pageIdFromLocation === pathToRoute;
+  const browserIsOnRootPath = pageIdFromLocation === '';
   if (renderedPageId) {
+    // When the application has rendered a view and the location path should reflect this.
     if (browserIsOnRootPath) {
       // The location path should be changed to the rendered page
       history.replace(`${pathToRoute}/${renderedPageId}`);
       return;
     }
     if (renderedPageId !== pageIdFromLocation) {
+      // Put the rendered pageId in the path
       history.push(`${pathToRoute}/${renderedPageId}`);
     }
     return listenForHistoryAction(
@@ -95,12 +96,15 @@ function formLayoutHistory({
     );
   }
   if (!browserIsOnRootPath) {
-    // Render the view correlating to the path
+    // The application has not rendered a view and a request is sent for a specific page. I.e. direct link.
     renderFunc({ newView: pageIdFromLocation });
   }
 }
 
 function getPageIdFromLocation({ pathname }, removePath) {
+  if (pathname === removePath) {
+    return '';
+  }
   return pathname.replace(`${removePath}/`, '');
 }