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experimental.webVitalsAttribution has no effect on useReportWebVitals

PerformanceAnything with regards to Next.js performance.Anything with regards to Next.js performance.

Status: Open.

Bug

#95919 In vercel/next.js;

· dayongkr opened on Jul 18, 2026

Minifier silently drops text when constant-folding tpl + tpl concatenation — broken on all stable releases, fixed in 16.3.0-canary.59 (backport request)

Status: Open.

#95900 In vercel/next.js;

· noamtal21 opened on Jul 17, 2026

OpenTelemetry HttpInstrumentation set up via instrumentation.ts never instruments incoming requests — http is loaded before register() and no later require passes the hook

InstrumentationRelated to Next.js Instrumentation.Related to Next.js Instrumentation.

Status: Open.

Bug

#95894 In vercel/next.js;

· r34son opened on Jul 17, 2026

next/swc drops the leading whitespace of a JSX text node that contains an HTML entity

Status: Open.

#95881 In vercel/next.js;

· chrisgory opened on Jul 16, 2026

CSP response header + loading.js (Suspense) breaks hydration - client components inert on direct load

RuntimeRelated to Node.js or Edge Runtime with Next.js.Related to Node.js or Edge Runtime with Next.js.

Status: Open.

Bug

#95873 In vercel/next.js;

· Rushil-s opened on Jul 16, 2026

cacheComponents: runtime ISR revalidation fails with a message-less StaticGenBailoutError — the real reason only reaches console.error, so error trackers get an empty, unactionable event

Status: Open.

#95867 In vercel/next.js;

· filiptrivan opened on Jul 16, 2026

Docs:

Status: Open.

Documentation

#95850 In vercel/next.js;

· nguyenvanhoaithuong0507-hub opened on Jul 16, 2026

Blank page when pressing Back between a reload and hydration with cacheComponents (regression in 16.3.0-canary.87)

Status: Open.

#95848 In vercel/next.js;

· franky47 opened on Jul 16, 2026

generateMetadata from not-found.tsx is correct during SSR but replaced after hydration on initial page load

Error HandlingRelated to handling errors (e.g., error.tsx, global-error.tsx).Related to handling errors (e.g., error.tsx, global-error.tsx).

MetadataRelated to Next.js' Metadata API.Related to Next.js' Metadata API.

Not FoundRelated to the not-found.tsx file or the notFound() function.Related to the not-found.tsx file or the notFound() function.

Status: Open.

#95836 In vercel/next.js;

· HarshalPatel1972 opened on Jul 15, 2026

Turbopack ignores custom Emotion cache during SSR when using @mui/material-nextjs (Pages Router)

TurbopackRelated to Turbopack with Next.js.Related to Turbopack with Next.js.

Status: Open.

Bug

#95834 In vercel/next.js;

· amirdevir opened on Jul 15, 2026

Turbopack 16.3: nft.json drops store target files for an ESM serverExternalPackage reached via a 'use client' component in a shared SSR-layer chunk → dangling alias → ERR_MODULE_NOT_FOUND on Vercel

Status: Open.

#95816 In vercel/next.js;

· cipriancaba opened on Jul 15, 2026

next/font/google: allow axes with discrete weight for variable fonts

Font (next/font)Related to Next.js Font Optimization.Related to Next.js Font Optimization.

Status: Open.

Bug

#95809 In vercel/next.js;

· zeinds opened on Jul 15, 2026