Five layout defects, found by asking a real page where every box is

A page can be 18 percent wrong in pixels without telling you which box is wrong, because one container that is a few pixels off moves every line under it and the difference smears across the whole page. So this release added an instrument that runs the same measurement in the reference browser and in Floati over the same frozen page and compares every element's box, then reports only the ones whose parent already matched - the containers actually at fault rather than the thousands of descendants that merely inherited the shift. On a large encyclopedia it turned 7,693 differing elements into three, and every one of the three was a real defect. Chief among them: an element that was both floated and relatively positioned stopped floating altogether, which is not a corner case but the ordinary way a float carries a badge or a sticky column - the encyclopedia's article-indicator icon filled the entire text column instead of sitting in its corner. Alongside it, three ways of asking an element how big it is gave the wrong answer: a link wrapping a span reported no box at all, an element hidden behind a one-pixel clip reported the size of the text it was hiding, and a full-cover invisible control kept its default size instead of covering anything. Every fix was checked against the reference browser on a minimal page before and after, the reference corpus did not move by a single pixel on any of its 96 cases, and the engine gate holds at 6375 of 6375.