# One screen's transparent header looks different from all the others

> All screens spread the same shared header options, but one also set headerBlurEffect: "prominent".

Web page: https://davidewins.com/errors/header-blur-effect-one-screen-differs

React Native. Confirmed fix, 25 September 2026.

Versions: expo-router native-stack

There is no error message for this one, only the symptom in the title.

## Cause

All screens spread the same shared header options, but one also set `headerBlurEffect: "prominent"`. With `headerTransparent: true` that picks a different blur material, so no amount of re-applying the shared object fixed it.

## Fix

Diff the final options object per screen, not the shared one. Remove the extra override so every screen uses exactly the shared options.

## More React Native errors

- [Screen crashes the whole app: Rendered more hooks than during the previous render](https://davidewins.com/errors/rules-of-hooks-usememo-after-early-return)
- [Feed shows an error state for every address: ReferenceError before initialization](https://davidewins.com/errors/tdz-const-used-in-map-before-declaration)
- [Screen crash: Maximum update depth exceeded](https://davidewins.com/errors/maximum-update-depth-competing-effects)
- [Reanimated crash on device: Tried to synchronously call a non-worklet function on the UI thread](https://davidewins.com/errors/worklet-calls-non-worklet-helper)
- [Rows wrapped in <Link asChild> collapse to a tiny height](https://davidewins.com/errors/link-aschild-function-style-dropped)

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