Thank you for your help.
However, I downloaded the latest built of 6.3 but it gives me even more surprise. On of them I found that is <framestlye> not support anymore and my dynamic path pointing not working as well. I've rolled back to previous version. The above problem reported is strange, it only happens to some browser in some PC. I've tested again today, it's working now??
Can you keep us posted the changes to current 6.3 so that we can prepare our implementation? In production environment, it's quite scarely for me to just implement then test it. It's better to know the changes and what's not working compare to previous version. Then, I can implement the latest version to resolve the problem.