I’ve just launched my site at www.sig.is, and quickly added a Icelandic version at www.sig.is/is. The services form on the page is the same on both languages, labels have simply been translated to Icelandic. After submitting, the form should redirect to /thanks/ on the English version, and /is/takk/ on the Icelandic one. The English version works as expected, but after submitting a form on the Icelandic site the user is directed to /is/takk/, and then immediately redirected again to the English success page at /thanks/.
Can someone explain why this happens? Is it perhaps not possible to have the same form direct to two different success pages?