I think I remember this being brought up before, but I can't find
anything on the mailing list with a quick search.
SVG 1.1 says the the value "auto" for SVG elements means the same as
"visible", which is quite different from CSS boxes, where it means
"scroll if you have a scrolling mechanism, and hidden otherwise". Given
that we don't allow scrolling viewports in SVG, shouldn't "auto" mean
"hidden" for us?
Oh I just found the mail I was thinking of, from dbaron:
http://lists.w3.org/Archives/Public/www-svg/2010Jul/0000.html
That never got a reply, and I said in
https://bugzilla.mozilla.org/show_bug.cgi?id=573387#c9 that I would
bring it up again. I doubt anyone is relying on overflow:auto meaning
visible; Gecko still interprets it as hidden, although WebKit and Opera
do follow the current spec here.
Updated test attached.
