I do a lot of complex searches (especially to get a response within the timeout limit), which have long search strings. On Fx 57 and a narrow-enough monitor, [[https://en.wikipedia.org/w/index.php?search=hastemplate%3A%22Infobox+NRHP%2Fconv%22+insource%3A%2Fnrhp_type%28%5B0-9%5D%29%3F+%3F%3D+%3Fnbp%2F+-insource%3A%2F%5C%5B%5C%5BCategory%3ANational+Memorials+of+the+United+States%2F&title=Special:Search&profile=default&fulltext=1&searchToken=5nwr4n5mm1bp80gjd9j09v86q | this search box]] loses the end of the text underneath the search button.
However, at least on Fx 57 and a narrow-enough monitor, [[https://en.wikipedia.org/w/index.php?search=hastemplate%3A%22Infobox+NRHP%2Fconv%22+insource%3A%2Fnrhp_type%28%5B0-9%5D%29%3F+%3F%3D+%3Fnbp%2F+-insource%3A%2F%5C%5B%5C%5BCategory%3ANational+Memorials+of+the+United+States%2F&title=Special:Search&profile=default&fulltext=1&searchToken=5nwr4n5mm1bp80gjd9j09v86q | this search box]] loses the end of the text underneath the search button.
I'm not sure if it's Timeless or OOUI being obnoxious here.It appears to be a combination of Timeless and OOUI, :Das Vector displays the entirety of the string with the search box outside of the form.