I Steps: Go to http://love.excite.com II Issue: notice the misalignment under "Match Words" III Conclusion: The height of the DIV is computed based on its non-floated contents, so the height does not include the floated UL. In IE and Opera, when the DIV has its explicit width removed, it behaves like WebKit. IV Other browsers: FF2: partially ok Opera: ok IE 7: ok V Nightly tested: 30236
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Not a bug. CSS 2.1 says: "Since a float is not in the flow, non-positioned block boxes created before and after the float box flow vertically as if the float didn't exist." [http://www.w3.org/TR/CSS21/visuren.html#floats]
Rather an evangelism bug.