All issues

XMLDocument.createElement() uppercases element names

#2273

· BusfahrerWalter opened

on Aug 6, 2026

Document.compatMode is undefined (KaTeX treats as quirks mode)

#2267

· steve02081504 opened

on Aug 1, 2026

querySelector stops throwing for an invalid selector after the first call (regression in 20.4.0)

#2257

· janosh opened

on Jul 27, 2026

var() with a fallback is dropped from inline style declarations

#2256

· janosh opened

on Jul 27, 2026

MutationObserver silently stops after garbage collection: internal listener callback is only held via WeakRef

#2255

· ntnyq opened

on Jul 26, 2026

Inserting a <form>/<select> that already has children re-points the children's parentNode at the raw target instead of the Proxy

#2253

· diegohaz opened

on Jul 25, 2026

Headers iteration yields original-cased names in insertion order instead of lowercase names in sorted order

#2249

· rexxars opened

on Jul 21, 2026

Contenteditable elements don't get a selection when focused

#2247

· erikpukinskis opened

on Jul 19, 2026

fetch with redirect: "manual" exposes redirect status and headers instead of an opaque-redirect response

#2239

· rexxars opened

on Jul 18, 2026

Elements `font-weight` returned by `getComputedStyle` is not normalized

#2238

· rijenkii opened

on Jul 17, 2026

Element.textContent setter drops falsy non-string values (0, false, NaN) instead of stringifying

#2236

· mellonis opened

on Jul 12, 2026

why npm happy-dom is 90.0% likely obfuscated showing by socket ?

#2233

· kpj2006 opened

on Jul 8, 2026