I have a somewhat customized sidecart implementation, using basically foxycart.jsonp.sidecart.js, but with the difference that I am loading the cart into a specific div and using my own sliding functionality to show/hide the cart. It all works great, sometimes. I am finding when I had products there are times when the sidecart doesn't update, looking at the console logs, it seems to be missing a call to render the cart include twig template after the product has been added. I can't figure out what is causing this to happen only some of the time and I also can figure out where I could add something so that I can force the re-rendering of the twig template.
Additionally, some of the add to carts are really slow and the "loading" style disappears even before the cart is updated.
Any ideas on where my issue might be? Whispering my dev site url.