Below two case pass test but why the times is different? Mokito case is 1 and 1 but PowerMokito case is 2 and 1 for the add api call.

package com.example;

import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mockito;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;

import java.util.ArrayList;
import java.util.List;

@RunWith(PowerMockRunner.class)
@PrepareForTest({MainActivity.class})
public class MySpyTest {
    @Before
    public void setup() throws Exception {
    }
    List<String> spyList1 = Mockito.spy(new ArrayList<String>());
    List<String> spyList2 = PowerMockito.spy(new ArrayList<String>());
    @Test
    public void verifySpyListMokito() {
        spyList1.add("A");
        spyList1.add("B");
        verify(spyList1,times(1)).add("A");
        verify(spyList1,times(1)).add("B");
        assertEquals(2,spyList1.size());
    }
    @Test
    public void verifySpyListPowerMokito() {
        spyList2.add("A");
        spyList2.add("B");
        verify(spyList2,times(2)).add("A");
        verify(spyList2,times(1)).add("B");
        assertEquals(2,spyList2.size());
    }
}