Редюсер вызывается два раза

const [state, dispatch] = useReducer((state, action) => {
    changeNow('journal')
    if (action.pupil) {
      state.pupils.push(action.pupil)
      state.marks.push('-'.repeat(state.subjects.length))
    }
    else if (action.subject) {
      state.subjects.push(action.subject)
      state.marks = state.marks.map(marks => [marks, '-'].join(''))
    }
    else if (action.deleteSubject) {
      state.subjects = removeIndex(state.subjects, action.deleteSubject)
      state.marks = state.marks.map(marks => removeIndex(marks, action.deleteSubject))
    }
    return {...state}
  }, {
    subjects: [],
    pupils: [],
    marks: []
  })

const [state, dispatch] = useReducer((state, action) => {
    changeNow('journal')
    state = JSON.parse(JSON.stringify(state)) // копирую
    if (action.pupil) {
      state.pupils.push(action.pupil)
      state.marks.push('-'.repeat(state.subjects.length))
    }
    else if (action.subject) {
      state.subjects.push(action.subject)
      state.marks = state.marks.map(marks => [marks, '-'].join(''))
    }
    else if (action.deleteSubject) {
      state.subjects = removeIndex(state.subjects, action.deleteSubject)
      state.marks = state.marks.map(marks => removeIndex(marks, action.deleteSubject))
    }
    return state
  }, {
    subjects: [],
    pupils: [],
    marks: []
  })

import React, { useReducer } from "react";
import "./styles.css";
import Other from "./Other";
 
export default function App() {
  const [state, dispatch] = useReducer((state, action) => {
    console.log("called reducer", state);
    return state + 1;
  }, 0);
  return (
    <div className="App">
      <Other dispatch={dispatch} state={state} />
      <h1>Hello CodeSandbox</h1>
      <h2>Start editing to see some magic happen!</h2>
    </div>
  );
}

import React, { useEffect } from "react";
 
export default function Other({ dispatch, state }) {
  useEffect(() => {
    console.log("calling dispatch");
    dispatch();
  }, [dispatch]);
  return <p>This is Other {state}</p>;
}