Disordered Formatting of Code Block Macro

Upon double-clicking the code block macro, the code formatting will be disordered, somehow.

Steps To reproduce

1. Create a new page.
2. Add Code Block Macro with a few lines of codes, e.g.:

   public static void main(String[] args)
   {
     System.out.println("Hello World!");
   }
   

3. Save the page.
4. Highlight the code by double clicking the code block.

Observed and Expected Behaviours are attached to this ticket.

Workaround
User can opt to another browsers as a workaround, as this issue only occurs in IE.