React 19.2 useActionState Pending Stuck After Navigation
React 19.2 useActionState leaves isPending true after a Next.js redirect or router.push? Here is why the state never resets and the pattern that fixes it.
Writing
Server Actions: what we have had to fix
12 write-ups from production, newest first. Each one is a problem hit on a real project and how it was diagnosed and fixed.
Next.js Server Action 413 Payload Too Large: Upload Fix
Next.js Server Action throws 413 Content Too Large for file uploads after deploying to Vercel? Here is why the 4 MB body limit fires and how to fix it.
React 19.1 useActionState Pending Stuck After Redirect
React 19.1 useActionState pending flag stays true after a server action redirect in Next.js 16? Here is the cause and a reliable workaround that resets it.
Next.js 16 useActionState Returning Stale State Fix
Next.js 16 useActionState returning the previous submission state after a navigation back? Here is why the hook caches it and the fix that resets cleanly.
React 19 useActionState Not Resetting Form After Success
React 19 useActionState returns success but the form shows old input values. Here is why the state persists and the form-key pattern that resets it cleanly.
Next.js 16 Server Action redirect() Caught in try/catch
Next.js 16 server action redirect() silently swallowed by a try/catch and the user stays on the form? Here is the NEXT_REDIRECT error and the rethrow fix.
Next.js 16.2 useActionState Loses Form State on Navigation
Next.js 16.2 wiping useActionState after a Server Action redirect? Here is why the hook resets across navigation and the pattern that keeps state intact.
Next.js 16 Form Component Redirect After Action Not Firing
Next.js 16 Form component leaves the user on the same URL after a server action redirect? Here is the navigation reason it ignores and the fix that ships.
React 19.2 useOptimistic Not Resetting After Server Action
React 19.2 useOptimistic state stuck after a server action returns? Here is the key, transition, and revalidatePath fix that lets the UI reset cleanly.
React useFormStatus Pending Stuck After Server Action
React 19.2 useFormStatus pending stuck on true after a Server Action returns? Here is why redirect, throw, and nested forms break it, with a real fix.
Next.js 16 cookies().set() Lost After redirect(): Fix
Next.js 16 cookies().set() not persisting after redirect() in a Server Action? Fix the async cookies API, Set-Cookie header drop, and the proxy.ts gotcha.
Next.js 16 Server Actions Invalid Error in Production
Next.js 16 Server Actions throwing 'Invalid Server Action' in production after deploy? Here is the cause and fix with working code for Vercel builds.
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