There is also a '''regression''': double clicking on my mail address at the bottom of the page and pasting it into a text field prepends it with "# ".
=== mconnor ===
Having spent some time flipping between the current prodpatches layout and Jesse's mockup, I find I keep skipping over the product/etc block, and the information isn't doesn't seem to scan in order. In the two column layout, skimming one column and then the other gives you all of the information in a relatively prioritized and well-grouped way, but I don't see a sane scanning order in Jesse's mockup that's efficient to me.
It does have a marginal effect on vertical space (one or two lines on my MBP screen), but information density is only useful if that density does not affect readability. Having five short columns instead of two taller ones just doesn't work for me. It feels cluttered and misaligned now, especially at my typical browser window width of 1200 pixels or so.
I will echo the header complaint, but we'd need to modify all of bmo, not just the show bug page, so we may have to fix that as a second pass, but I'll agree that its really not as effective as some feel.