try prepending iframe child

Author: filiptronicek

components/supervisor/frontend/src/shared/loading-frame.ts

@@ -14,9 +14,10 @@ export function load(): Promise<{
     return new Promise((resolve) => {
         const frame = document.createElement("iframe");
         frame.src = startUrl.toString();
+        console.debug("Showing iframe because ")
         frame.style.visibility = "visible";
         frame.className = "gitpod-frame loading";
-        document.body.appendChild(frame);
+        document.body.prepend(frame);
 
         frame.onload = () => {
             const frontendDashboardServiceClient = new FrontendDashboardServiceClient(frame.contentWindow!);