I've a DNN 7.2 site with 3 languages and search functionality . The search works only and only if the language cookie is set to en-US .
If the culture in the search service URL is fr-FR and the language cookie contains "fr-fr", which is very normal, the search will not work, if i changed the cookie manually to be "en-US" and left the url culture as is "fr-fr" the search works as expected and return french results .
Why this happens ? Is there a fix ?