Breakpoint doesn't work on lambdas which returns a generic type #498

package com.example.demo;

import java.util.Optional;
import java.util.function.Function;

public class Test {
  public static void main(String[] args) {
    map(t -> Optional.ofNullable(t), "Null").isPresent();
  }

  private static <T, R> Optional<? extends R> map(Function<? super T, ? extends Optional<? extends R>> mapper, T value) {
    return mapper.apply(value);
  }
}

package com.example.demo;

import java.util.Optional;
import java.util.function.Function;

public class Test {
  public static void main(String[] args) {
    map(t -> Optional.ofNullable(t), "Null").isPresent();
  }

  private static <T, R> Optional<R> map(Function<T, Optional<R>> mapper, T value) {
    return mapper.apply(value);
  }
}

package com.example.demo;

import java.util.Optional;
import java.util.function.Function;

public class Test {
  public static void main(String[] args) {
    map(t -> Optional.ofNullable(t), "Null").isPresent();
  }

  private static Optional<String> map(Function<String, Optional<String>> mapper, String value) {
    return mapper.apply(value);
  }
}