Hi Anis, yup that is a bug in the IE9 beta, they will most likely be fixing that problem before their final release.

It's actually just a cosmetic problem though, if you move your mouse over the control area the controls will appear and actually be usable.

If you don't want to work with that cosmetic problem right now, then you will need to uninstall the IE9 beta and go back to IE8, like Colin mentions.

- Michael