Inconsistent showing of VAT for simple, bundle and config items
We use simple, bundled and configurable items (18.104.22.168). We're seeing inconsistent VAT on many products: sometimes it is correctly shown on the product category (thumbnail) page, other times not. Then it may or may not be included in the product detail page. Sometimes going back and forth between the two will cause correct showing of VAT on both. Is this likely to be a magento issue? Maybe the browser cache?
We're told by our developers that this is just how Magento is - but surely others are using it in Europe where VAT is treated this way - and successfully?