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Legacy and unused JavaScript causing performance issues

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

Status: Open.

Bug

#86562 In vercel/next.js;

· jkantner opened on Nov 26, 2025

Scroll position restored to previous page’s height after browser back, when using cookie.set in server function within useEffect

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

#86528 In vercel/next.js;

· y-hsgw opened on Nov 26, 2025

Unhandled errors within a Suspense aren't appearing consistently in OTEL traces/spans

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

Status: Open.

Bug

#86517 In vercel/next.js;

· socsieng opened on Nov 25, 2025

Failed to parse postponed state with Z_BUF_ERROR on vercel deployment

Status: Open.

Bug

#86511 In vercel/next.js;

· arisstogiannos opened on Nov 25, 2025

Css translate rotate scale properties not output in css bundle if used before transform

CSSRelated to CSS.Related to CSS.

Status: Open.

Bug

#86509 In vercel/next.js;

· Samael-TLB opened on Nov 25, 2025

Turbopack compilation error with Swagger

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

Status: Open.

Bug

#86507 In vercel/next.js;

· Ulis123 opened on Nov 25, 2025

@next/eslint-plugin-next incorrect named exports

LintingRelated to `next lint` or ESLint with Next.js.Related to `next lint` or ESLint with Next.js.

Status: Open.

Bug

#86504 In vercel/next.js;

· thernstig opened on Nov 25, 2025

<code>useSearchParams() instanceof ReadonlyURLSearchParams</code> returns <code>false</code> on the server and <code>true</code> on the client.

Status: Open.

Bug

#86501 In vercel/next.js;

· ClementDreptin opened on Nov 25, 2025

Turbopack dev server drops MapLibre inline worker (react-map-gl clusters, tilelayers never render)

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

Status: Open.

Bug

#86495 In vercel/next.js;

· Dendekky opened on Nov 25, 2025

When Turbopack is enabled, generateBuildId executes on next dev

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

Status: Open.

Bug

#86483 In vercel/next.js;

· besh opened on Nov 24, 2025

Request not instanceof NextRequest in proxy

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

Status: Open.

Bug

#86481 In vercel/next.js;

· frederikprijck opened on Nov 24, 2025

<code>next dev</code>: Instrumentation hook is still analyzed for the edge runtime despite never running in the edge runtime

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

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

Status: Open.

Bug

#86479 In vercel/next.js;

· blairmcalpine opened on Nov 24, 2025