after adding some items to my cart, i navigate to the “mysite/checkout/onepage/success” page and it says the order is complete. i see the order at the admin panel.
i can confirm this behavior in shop /english, in your default shop (without english) there is no problem, so it seems its a really hard bug in multistore funkction of magento! Please write a bug report!
I tried duplicating this on an install of 1.1.1 I have and going directly to the checkout/onepage/success simply redirected me to checkout/cart with the items in my cart displaying.
i also added a product to cart and called http://www.foo.de/onepage/checkout/success without checkout process and was redirected to normal card which contains the added product.
I don’t see any bug here. It should redirect to shopping cart if no valid data was submitted to this page, and it does redirect.
Did I miss anything ?