With the exact search of:

+tworld linux chips 1.3.0-5

I could repeat the result now. In fact, scroll a bit more down in the results page I saw a third occurrence of that duplicate one. If I can repeat the test with this search, I guess other users can do it too. Please do so. A direct link for the HTML version of the search is:

Choose any or all or twice on ten times... the more, the best. :)
posted by balacobaco 3 years and 11 days ago Link

The same search doesn't duplicate results in the normal DDG version, so yeah it's a html-version bug. :\
posted by <hidden> • 3 years and 10 days ago Link
Thank you for confirming it! :)
posted by balacobaco 3 years and 5 days ago Link