Entire SVG redraws on window resize (even when not necessary) I don't think it should be necessary for this entire SVG to redraw on window resize, unless the outermost SVG has a filter on it. None of the <svg> kids use relative sizing. Use QuartzDebug to see the bad redrawing.
Actually, I'm not sure we can avoid the redraw, but we can avoid the relayout (which it seems to be doing).
Relayouting is avoided in trunk now.