Execute setMarkdownToPreview on the string being typed

apps/app/src/components/PageEditor/PageEditor.tsx

@@ -149,7 +149,10 @@ export const PageEditor = React.memo((props: Props): JSX.Element => {
     // set to ref
     initialValueRef.current = initialValue;
   }, [initialValue]);
-  const [markdownToPreview, setMarkdownToPreview] = useState<string>(initialValue);
+
+  const { data: codeMirrorEditor } = useCodeMirrorEditorIsolated(GlobalCodeMirrorEditorKey.MAIN);
+
+  const [markdownToPreview, setMarkdownToPreview] = useState<string>(codeMirrorEditor?.getDoc() ?? '');
   const setMarkdownPreviewWithDebounce = useMemo(() => debounce(100, throttle(150, (value: string) => {
     setMarkdownToPreview(value);
   })), []);
@@ -159,8 +162,6 @@ export const PageEditor = React.memo((props: Props): JSX.Element => {
   }, [setMarkdownPreviewWithDebounce]);
 
 
-  const { data: codeMirrorEditor } = useCodeMirrorEditorIsolated(GlobalCodeMirrorEditorKey.MAIN);
-
   const { scrollEditorHandler, scrollPreviewHandler } = useScrollSync(GlobalCodeMirrorEditorKey.MAIN, previewRef);
 
   const scrollEditorHandlerThrottle = useMemo(() => throttle(25, scrollEditorHandler), [scrollEditorHandler]);