fix: don't overwrite public cameras

packages/fiber/src/core/index.tsx

@@ -206,8 +206,8 @@ function createRoot<TCanvas extends Canvas>(canvas: TCanvas): ReconcilerRoot<TCa
       if (!is.equ(params, raycaster.params, shallowLoose))
         applyProps(raycaster as any, { params: { ...raycaster.params, ...params } })
 
-      // Create default camera
-      if (!is.equ(lastCamera, shallowLoose)) {
+      // Create default camera, don't overwrite any user-set state
+      if (!state.camera || (state.camera === lastCamera && !is.equ(lastCamera, cameraOptions, shallowLoose))) {
         lastCamera = cameraOptions
         const isCamera = cameraOptions instanceof THREE.Camera
         const camera = isCamera

packages/fiber/tests/core/renderer.test.tsx

@@ -875,4 +875,23 @@ describe('renderer', () => {
     expect(one).toBeCalledTimes(1)
     expect(two).toBeCalledTimes(0)
   })
+
+  it("camera props shouldn't overwrite state", async () => {
+    const camera = new THREE.OrthographicCamera()
+
+    function Test() {
+      const set = useThree((state) => state.set)
+      React.useMemo(() => set({ camera }), [set])
+      return null
+    }
+
+    const store = await act(async () => root.render(<Test />))
+    expect(store.getState().camera).toBe(camera)
+
+    root.configure({ camera: { name: 'test' } })
+
+    await act(async () => root.render(<Test />))
+    expect(store.getState().camera).toBe(camera)
+    expect(camera.name).not.toBe('test')
+  })
 })