When you search for something with DuckDuckGo, click on a result and then click on your browsers back button you end up at DDGs start page and not the results page. 1. Enter "guix" in your search/address bar while having DDG as default search engine. 2. Click on first result -> guix.gnu.org 3. Now click after landing at our beautiful website on the browsers back button (<-) 4. You end up at https://duckduckgo.com/?ia=web and not at https://duckduckgo.com/?q=guix This does NOT happen when you 1. use DuckDuckGo in Chromium via it's address bar 2. use DDG in Icecat starting from duckduckgo.com and not the address/search bar 3. use Bing or Google via Icecat's address/search bar I have disabled the "Spoof Referers" setting which comes from Icecat and is available at about:preferences#privacy Icecat has some custom DDG search plugin: https://git.savannah.gnu.org/cgit/gnuzilla.git/tree/makeicecat#n172 https://git.savannah.gnu.org/cgit/gnuzilla.git/tree/data/searchplugins/duckduckgo.xml Maybe that's breaking that. I don't know.