Add repro for #2264

test/2264/iframe.js

@@ -0,0 +1,22 @@
+const init = () => {
+    loadEditor(function() {
+        // create the editor
+        const target = document.getElementById('container');
+        const editor = monaco.editor.create(target, { language: 'html' });
+
+        // load some sample data
+        (async () => {
+          const response = await fetch('https://microsoft.github.io/monaco-editor/');
+          const html = await response.text();
+          editor.getModel().setValue(html);
+        })();
+    });
+};
+
+window.addEventListener('DOMContentLoaded', () => {
+  if (!window.innerWidth || !window.innerHeight) {
+    window.addEventListener('resize', init, { once: true });
+  } else {
+    init();
+  }
+});