Wikimedia Bugzilla is closed!

Inpuboxes are displayed with width=1 on old browsers
if no explicit width=nn is set. Example (minus class):

<input name="search" type="text" value="" size="" />
..........................................^^^^^^^

Good example with explicitly set with=6 (minus class):
<input name="title" type="text" value="" size="6" />
.........................................^^^^^^^^

The help page announces a default width 50, but that
didn't make it into the actual size="".  The XHTML 1
spec. points to the HTML 4.01 spec., and that only
offers CDATA. My HTML 3.2 browser interprets it like
this:

No size at all: use a default (apparently size="18").
Specified size: use that (above 50 can cause havoc).
size="": same effect as size="1", ugly for <inputbox>