SVG does not respect overflow:visible.

Source/core/css/svg.css

Index: Source/core/css/svg.css
diff --git a/Source/core/css/svg.css b/Source/core/css/svg.css
index f860d7baade51651650aab15f3170139dfd39222..c3f55390da63457625d4396721f9bbcfb01fd98f 100644
--- a/Source/core/css/svg.css
+++ b/Source/core/css/svg.css
@@ -47,6 +47,10 @@ svg:not(:root), symbol, image, marker, pattern, foreignObject {
     overflow: hidden
 }
 
+svg:root {
+    overflow: hidden;

[krit, 2014/04/01 12:23:14]

It of course depends how the spec defines the svg root element, but it says:

""
The initial value for ‘overflow’ as defined in [CSS2-overflow] is 'visible', and
this applies also to the root ‘svg’ element; however, for child elements of an
SVG document, SVG's user agent style sheet overrides this initial value and sets
the ‘overflow’ property on elements that establish new viewports (e.g., ‘svg’
elements), ‘pattern’ elements and ‘marker’ elements to the value 'hidden'.
""

So for all SVG root elements, the value should be visible, not hidden. For all
child elements establishing a viewport the UA style sheet should be hidden.
According to the spec, this edit is wrong.

+}
+
 text, foreignObject {
     display: block
 }