Why does redux-react work so weird?

Question

JavaScript

Please take a look at the screenshot of the slider, you will see the code after the picture.

The cost is 1500 (Min variable) and 1800 (Max variable)
On the slider, the current value is 1500 (Min variable and the current value is 1700 (Max variable)
Two variables, three values.
Here is my slider element.

Min = this.props.min
Max = this.props.max

            <Slider range step={100}
                    defaultValue={[Min, Max]}
                    min={Min} max={Max}
                />


const mapStateToProps = state => (
    {
        min:state.list.min,
        max:state.list.max
    }
);

Here is the reducer

const INITIAL_STATE = {
    min: 1400,
    max: 1700
};

const receivePosts = (state, action) => {
    return {...state,
        max: 1800,
        min: 1500
    }
}

export default (state = INITIAL_STATE, action) => {
    switch (action.type) {
    case 'RECEIVE_POSTS':
        return receivePosts(state,action)
    }
    return state
}

What could be the problem ??? Where did the old value come from?? At me already the roof goes
It is the second value defaultValue does not want to change.