References to inaccesible methods with static compilation leads to runtime error

import java.util.function.Supplier;

public class Test {
  static class A {
    private static String m() { return null; }
  }
  public static void main(String[] args) {
    Supplier<String> x  = A::m;
  }
}

Exception in thread "main" java.lang.IllegalAccessError: class Test tried to access private method 'java.lang.String Test$A.m()' (Test and Test$A are in unnamed module of loader 'app')
        at Test.main(groovy51.groovy:9)