v0.1.2569 Sep 2026·Rendering, Tabs & interface

Grid front pages that fit: multi-column layouts sized like the reference browser

A render-fidelity fix for CSS grid, the layout system most modern news, dashboard and app home pages are built on. When a grid item spans several columns (a wide lead story across most of the grid, a sidebar across the rest), the engine had been measuring the whole grid too wide and letting it overflow the page. It now sizes multi-column grids the way the reference browser does, so a content-heavy front page lays out in its proper columns instead of spilling off the side. Sidebars that ask to be only as wide as their content stay that width instead of ballooning, and a full-width banner row that spans every column is measured once rather than counted many times over. The result is that grid-built pages, most of the modern web's home and section pages, render with the right column structure and nothing pushed off screen. Pages built with simpler layouts are unchanged, and the overall platform score stays at 70 (this is a correctness fix within layout, which was already complete).

Parity with the reference browser

74overall, as of v0.1.343

Web APIs / DOM surface42

Security architecture66

GPU / graphics acceleration68

DevTools / extensions72

Networking85

Media85

Accessibility85

Real-world site compatibility99

HTML parsing100

CSS parsing + selectors100

Layout: block / flex / grid / tables / writing-modes100

Paint + visual100

JavaScript language100

JavaScript performance (JIT)100

HTML parsing100

What changed 3 changes

Tabs & interface	Multi-column front pages fit the window. A grid with items spanning many columns (the wide lead plus a narrow sidebar shape a news or dashboard homepage uses) is now measured to its correct width instead of far too wide, so the page lays out in its columns rather than overflowing off the right edge.
Tabs & interface	Fit-to-content sidebars stay their size. A sidebar column told to be only as wide as its content no longer balloons to several times its width, so the panels beside a main story sit where they belong.
Rendering	Full-width banner rows are measured once. A row that spans every column of a grid (a full-bleed header or strip) is now counted a single time across the columns instead of being multiplied, matching how the reference browser sizes the grid.