1. Create a new drawing file;

2. Insert an OLE object in this file;

3. Save this file as picture.dwg (you can pick up any filename here);

4. Create another new drawing file;

5. Insert the first dwg file into this file as external reference;

Result: you cannot see anything about the external reference.

Notice: It does work if you insert the file as a block.

This problem has been fixed, please use the latest version.