Every column but the title is shrink-0, so once the fixed widths outgrow
the row the title gives all of it: measured clientWidth 0 on every row at
a 1000px window — a table of channel, duration, views and date with no
titles. Columns now drop from the right as space runs out, least
important first, in the order the user named: title, then channel, then
the rest. Measured at 1000px: title 0 -> 351.
I'd written this off as "E15's problem, bites below ~640px" — wrong by
600px, because I only ever measured at 1440.