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[Turbopack] TypeScript Namespace Merging causes ReferenceError during runtime

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

Status: Open.

Bug

#89136 In vercel/next.js;

· rubenferreira97 opened on Jan 28, 2026

zlib memory leak Node.js 24

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

Status: Open.

Bug

#89091 In vercel/next.js;

· izorg opened on Jan 27, 2026

Link doesn't scroll to section anchor (by id) again

Linking and NavigatingRelated to Next.js linking (e.g., <Link>) and navigation.Related to Next.js linking (e.g., <Link>) and navigation.

Status: Open.

Bug

#88986 In vercel/next.js;

· evgeniyworkbel opened on Jan 24, 2026

<code>router.push()</code> reuses cached redirect from prefetch without fresh middleware evaluation

Linking and NavigatingRelated to Next.js linking (e.g., <Link>) and navigation.Related to Next.js linking (e.g., <Link>) and navigation.

MiddlewareRelated to Next.js Middleware.Related to Next.js Middleware.

Status: Open.

Bug

#88937 In vercel/next.js;

· KumarNitin19 opened on Jan 23, 2026

[Turbopack] POST requests from client components to API routes never reach server in Next.js 16

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

Status: Open.

Bug

#88917 In vercel/next.js;

· createdbymax opened on Jan 22, 2026

next/font/local custom font-family declaration causes mismatch between @font-face and className CSS

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

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

Status: Open.

Bug

#88894 In vercel/next.js;

· oskari opened on Jan 22, 2026

Docs: Update <code>with-docker</code> example to not use standalone server or update documentation

Status: Open.

Documentation

#88885 In vercel/next.js;

· Luk-z opened on Jan 22, 2026

Next.js 16 Image Optimization returns "url parameter is not allowed" for external domains despite correct remotePatterns configuration

Image (next/image)Related to Next.js Image Optimization.Related to Next.js Image Optimization.

Status: Open.

Bug

#88873 In vercel/next.js;

· duongseedcom opened on Jan 22, 2026

Turbopack standalone build in 16.1.x omits serverExternalPackages from .next/standalone/node_modules

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

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

Status: Open.

Bug

#88844 In vercel/next.js;

· MTroian94 opened on Jan 21, 2026

Docs: Wrong example on Pages router with Fonts in _document.tsx

ImprovementReport possible improvements to make in our documentationReport possible improvements to make in our documentation

Status: Open.

Documentation

#88832 In vercel/next.js;

· ackvf opened on Jan 20, 2026

ReferenceError: _self___NEXT_DATA___autoExport is not defined on next dev (16.1.4)

Pages RouterRelated to Pages Router.Related to Pages Router.

Status: Open.

Bug

#88780 In vercel/next.js;

· leeeunsang-tmobi opened on Jan 20, 2026

Can't start dev project in the vscode's js debug terminal with bun

create-next-appRelated to our CLI tool for quickly starting a new Next.js application.Related to our CLI tool for quickly starting a new Next.js application.

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

Module ResolutionModule resolution (CJS / ESM, module resolving).Module resolution (CJS / ESM, module resolving).

Status: Open.

Bug

#88736 In vercel/next.js;

· Aokoooooo opened on Jan 19, 2026