diff --git a/pages/utils/iframe-wrapper.tsx b/pages/utils/iframe-wrapper.tsx index ca8017e3ce..aeea4f8774 100644 --- a/pages/utils/iframe-wrapper.tsx +++ b/pages/utils/iframe-wrapper.tsx @@ -40,13 +40,14 @@ export function IframeWrapper({ id, AppComponent }: { id: string; AppComponent: iframeEl.className = styles['full-screen']; iframeEl.id = id; iframeEl.title = id; - iframeEl.srcdoc = ''; container.appendChild(iframeEl); const iframeDocument = iframeEl.contentDocument!; // Prevent iframe document instance from reload // https://bugzilla.mozilla.org/show_bug.cgi?id=543435 iframeDocument.open(); + // set html5 doctype + iframeDocument.writeln(''); iframeDocument.close(); const innerAppRoot = iframeDocument.createElement('div');