SO much. Mainly a) lack of support for control over element breaking (I haven't gone really in-depth with the spec, but even the most obvious things are supported terribly) b) the weird behaviour of margin collapsing (and adding extra margins - WTF?!)
Just use tables. I know that everyone recommends against it, but IMO they are the only solution which works as expected. Everyone says they have a fancy workaround, but none of them works well enough. And besides, whats wrong with tables? Semantic HTML is hip again :-)
Please, show, how do you make tables that work like CSS columns, i.e. reflow the content to fill the specified number of columns. Unless you hardcode content for each TD, but what the point then?
And that's exactly what's wrong with tables (semantic purity aside)—they shackle you content to one specific structure, meanwhile using CSS for layout you can move your blocks around more or less freely.
Exactly. Instead of just resorting to tables, I'd be much more likely to resort to a couple of DIVs which would involve less markup and be less semantically incorrect. But the whole point is that I don't want to have to decide, on an article-by-article basis, exactly where my break between two columns should actually be.
