Content concatenated in code Macro For IE 9

Steps to reproduce:

1. Create a page with code macro
2. put multiple line of content in notepad
3. cut all those content from notepad
4. paste it in code macro
5. save the page

Expected behavior: Content in code macro will show as it originally, multiple line

Actual behaviour: Whole content concatenated into a single line

Additional note:

IE 10 working just fine without problem