We're using Piwik 1.8.3 and detected an ajax bug which causes errors on displaying data.
When your on page "ecommerce & goals" and watching the conversions by visitors of products. First view is totally correct. When clicking on abandoned carts tab, also the view is still correct, but when clicking on ecommerce orders tab causes the error.
Then suddenly you will see the results of the abandoned carts as ecommerce orders.
Keywords: ajax, ecommerce orders, abandoned cart
Attachment: Here an example picture, it shows the result of the bug for one simple product
Sorry I don't speak German, what is the bug exactly? Can you reproduce the steps so we can try on our test piwik server?