v0.1.4421 Jul 2026·Rendering, JavaScript & JIT, Media

A large encyclopedia works properly, and icons stop coming out as blobs

This release came from putting Floati and the reference browser side by side on real websites and looking hard at the differences. The biggest find: a large encyclopedia was quietly running none of its JavaScript. MediaWiki checks half a dozen things about a browser before it will run anything, and three of those checks were failing here, so the site fell back to its no-JavaScript rendering: the table of contents stayed permanently expanded and nothing was interactive. All three are fixed, and a large encyclopedia now renders with a collapsed contents list and working controls exactly like the reference browser. The second find was subtler and everywhere: an outlined shape that is not explicitly closed, which is what every chevron, arrow, tick and diagram connector is, was being closed anyway, filling it into a solid blob. A developer-docs site's menu arrows were solid triangles, and a database project's syntax diagrams had stray lines slashing across them. Also: tables honour a page's requested cell spacing exactly, so a link-sharing site now shows the same number of stories per screen as the reference browser.

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 5 changes

Media	A large encyclopedia and every other MediaWiki site now run their JavaScript. Three browser-capability checks were failing, and failing them makes the site serve its no-JavaScript rendering: a permanently expanded contents list and dead controls.
Rendering	Outlined shapes that are not explicitly closed are no longer filled in. Chevrons, arrows and tick marks were coming out as solid blobs, and technical diagrams had stray lines drawn across them.
Rendering	Tables use exactly the cell spacing a page asks for. A link-sharing site now fits the same number of stories on screen as the reference browser, to the pixel.
Rendering	Borders whose thickness comes from a design-system variable are drawn at their real thickness instead of defaulting to three pixels.
JavaScript & JIT	Added CSS.supports, so a page asking in JavaScript whether a layout feature is available gets the same answer it gets in its stylesheet.