Hi. Recently when I use Wikipedia search box and click a search suggestion it just closes and I return to the current page. If instead of clicking a suggestion I finish entering the search phrase and hit enter the search works fine. It's reproducible with many Wikipedia languages including English and in regular Firefox and in nightly and even in incognito and with all add-ons disabled. Chrome has no such issue. For example go to https://en.m.wikipedia.org/wiki/Main_Page and click the magnifier icon at the top right, enter some word e.g. "Barn", wait for suggestions and click the first one.