0.13.4 - 2026-10-14

Changed

• SSR now sends HTML without indentation so hydration performs better.
  --pretty-html (MountConfigBuilder::pretty_html) brings indentation back.
• SSR fetches and the proxy use rustls 0.23 (was 0.20, RUSTSEC-2024-0336) with the ring
  provider, unless the app installed one, and HTTP/1.1 only (h2 0.3, RUSTSEC-2026-0258).

Fixed

• Hydration moved every node the server sent, so the focus left the field,
  scrolled boxes went back to the top, iframes reloaded.

• The hydration report didn't count server-rendered elements that hydration threw away.

• LazyListCache didn't reuse the list fetched during server-side rendering, so the browser
  showed it loading and fetched it again.

• LazyCache created after the first render (f. ex. on navigating back to a route) started with
  the value the server fetched for the page, which could be stale by then, instead of fetching it.

• css! panicked on an attribute in a pseudo-class argument: :not([disabled]).

• css! left an expression in the middle of a value unsubstituted: 1px solid {color}.

• css! macro fixes for:

  • pseudo-elements: ::before { ... },
  • chained pseudo-classes: :first-child:hover,
  • pseudo-classes with arguments: :not(:last-child), :is(:hover, :focus),
  • selector lists: :hover, :focus,
  • pseudo-classes after a referenced Css: [other_css]:hover,
  • custom properties with digits, uppercase letters or _: --gap-2,
  • url(...) followed by other values: url('a.png') no-repeat,
  • keyframe selectors: from, to, 0%, 100%, 33.3%,
  • @media without a colon in the query: @media print,
  • a semicolon in quotes or parentheses: content: ';', data URI,
  • no semicolon after the last declaration or after a @media block.

• A referenced Css block ([other_css] { ... }) relied on CSS nesting, now it's a descendant
  selector.

• vertigo-testing: with E2E_HEADLESS=0, windows of parallel tests took the focus from each
  other, so Ctx::retype typed after the old value and drop-downs closed mid-test.

Performance

• Hydration built its virtual tree in quadratic time - now linear
  (f. ex. ~7k nodes dropped from 130 ms to 27 ms).