Class2.java

import org.checkerframework.checker.nullness.qual.NonNull;
import org.checkerframework.checker.nullness.qual.Nullable;

public class Class2 {
    public static @Nullable Object field;
    public @Nullable Object instanceField;

    void test() {
        Class1.method3(this);
        @NonNull Object o = instanceField;
    }

    void test2() {
        //        instanceField = new Object(); Can't reproduce with assignment
        Class1.method3R(this);
    }
}