ADDITIONAL SYSTEM INFORMATION :
OS: Mac OS Cataline 10.15.7
Java Version: openjdk 17 2021-09-14

A DESCRIPTION OF THE PROBLEM :
An incompatible type can be passed with List.of() to a method that is restricted by lower bounded wildcards.

Employee extends Person and Unemployed extends the Employee class.

private static void printList(final List<? super Employee> list){
        /** **/
}

var unEmployedList = List.of(new Unemployed("Huseyin"));
printList(unEmployedList);

Compiler does not compile this code, exception message: java: incompatible types: java.util.List<org.jugistanbul.Unemployed> cannot be converted to java.util.List<? super org.jugistanbul.Employee>

But the compiler compiles this code:
printList(List.of(new Unemployed("Huseyin")));


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Create Person Class:

class Person
{
    private String name;

    public Person() {
    }

    public Person(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

And create Employee class which extends Person class

class Employee extends Person
{
   private BigDecimal salary;

   public Employee(){}
    public Employee(String name) {
        super(name);
    }

    public BigDecimal getSalary() {
        return salary;
    }

    public void setSalary(BigDecimal salary) {
        this.salary = salary;
    }
}

And create Unemployed class which extends Employee class

class Unemployed extends Employee {

    public Unemployed(String name) {
        super(name);
    }
}

Then create printList method with lower bounded wildcard restrict

private static void printList(final List<? super Employee> list){
        /** **/
 }

And finally, call the method whit the argument Unemployed list that is built with List.of

printList(List.of(new Unemployed("Huseyin")));

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The expected behavior is that the code does not compile and gives an incompatible types exception message like this: java.util.List<org.jugistanbul.Unemployed> cannot be converted to java.util.List<? super org.jugistanbul.Employee>

ACTUAL -
The compiler compiles this code and gives no exception message

---------- BEGIN SOURCE ----------
package org.jugistanbul;

import java.math.BigDecimal;
import java.util.List;

/**
 * @author hakdogan (huseyin.akdogan@patikaglobal.com)
 * Created on 02.12.2021
 ***/
public class Generics
{

    private static void printList(final List<? super Employee> list){
        System.out.println(list.get(0).getClass().getName());
    }

    public static void main(String[] args) {
        
        var personList = List.of(new Person("Battal Gazi"));
        var employeeList = List.of(new Employee("Koroglu"));
        var unEmployedList = List.of(new Unemployed("Bolu Beyi"));

        printList(personList);
        printList(employeeList);
        printList(unEmployedList);
    }
}

class Person
{
    private String name;

    public Person() {
    }

    public Person(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

class Employee extends Person
{
   private BigDecimal salary;

   public Employee(){}
    public Employee(String name) {
        super(name);
    }

    public BigDecimal getSalary() {
        return salary;
    }

    public void setSalary(BigDecimal salary) {
        this.salary = salary;
    }
}

class Unemployed extends Employee {

    public Unemployed(String name) {
        super(name);
    }
}
---------- END SOURCE ----------

FREQUENCY : always