another attempt at #6803...

Author: williamstein

src/packages/frontend/editors/slate/slate-react/plugin/react-editor.ts

@@ -166,6 +166,13 @@ export const ReactEditor = {
       // it's very important to restore the selection to where it was before
       // focusing, since otherwise the selection is reset to the top of the document.
       Transforms.setSelection(editor, selection);
+      // Critical to update the DOM selection ASAP, but not in same render loop (since that's too soon).
+      // Note that useLayoutEffect is not quick enough and things get broken without this below.  An example
+      // is in virtualized mode when moving a list item down in a list.
+      const { updateDOMSelection } = editor;
+      if (updateDOMSelection != null) {
+        window.requestAnimationFrame(updateDOMSelection);
+      }
     }
   },