Try using a different browser. If you are using IE, it has conflicts with eBay.

chrome or firefox work more smoothly with eBay.

Otherwise, try putting ebay.com.au into your list of compatibility view sites, or taking it out if it is in 🙂

tools menu in Internet Explorer, then Compatibility View Settings, add ebay.com.au, ok. Or remove it.

Some updates, it works better as compatibility view.