Issue with custom header in nested Stack navigator

I have a folder strusture like this:

src/
  app/
    (app)/
      _layout.tsx
      index.tsx (App layout)
      (auxiliary)/some-feature/
        index.tsx
    _layout.tsx (Root layout)

In the Root layout i return the Stack navigator with a custom header like this:

<Stack
  initialRouteName="(app)/index"
  screenOptions={{
    header: (props) => <Header {...props} />,
  }}
/>

In the App layout i return the Slot component like this:

return <Slot />;

In the (app)/index.tsx i modify the Screen options like this:

<Stack.Screen
  options={{
    headerTitle: () => <Logo size={85} />,
  }}
/>

The issue is that the headerTitle is not being displayed when i navigate to the (app)/index screen. The headerTitle becomes undefined. Its probably overriden by the Slot component ? If i remove (app)/_layout.tsx everything works fine.

I have tried defining Screen options inside the _layout.tsx but it doesn't work.