Shipping price not calculated after add to cart but is after page reload

[Piszi]

Hello,

I updated my shipping prices recently and since then the shipping price isn't calculated into the final price in the cart module after hitting add to cart but is calculated after you reload the page. I use the Js cart and and have a modified cart module. In the cart module I added quantity update function and I show the shipping and payment price. If I print out the cart session right after I hit add to cart the shipping price is 0 but the correct shipment price id is in the session. But as I wrote before if I reload the page or update quantity in the cart module everithying shows up correctly until you add a product to cart which would/should trigger a new shipping price.

I don't understand why is this happening because before I updated the shipping prices everything worked fine.
What could be the problem? (for me it looks like a js problem but i didn't modified the code just updated the shipping prices)