ADDITIONAL SYSTEM INFORMATION :
MacOS Sequoia 15.5

openjdk version "24" 2025-03-18
OpenJDK Runtime Environment (build 24+36-3646)
OpenJDK 64-Bit Server VM (build 24+36-3646, mixed mode, sharing)

A DESCRIPTION OF THE PROBLEM :
A list iterator created from an empty reversed list allows adding an element and subsequent removal.

However with a ListIterator created from doubly reversed list the removal operation will fail with an IllegalStateException.

The behavior of the ListIterator is inconsistent.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Refer to test case code

ListIterator<Object> rev1 = new ArrayList<>().reversed().listIterator();
rev1.add("a");
rev1.remove(); //succeeds

ListIterator<Object> rev2 = new ArrayList<>().reversed().reversed().listIterator();
rev2.add("a");
rev2.remove(); //fails with java.lang.IllegalStateException

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Java finishes without exception
ACTUAL -
Exception in thread "main" java.lang.IllegalStateException
at java.base/java.util.ArrayList$Itr.remove(ArrayList.java:1063)
at Test.main(Test.java:9)

---------- BEGIN SOURCE ----------
import java.util.ListIterator;
import java.util.ArrayList;
import java.util.Collections;

public class Test{
    public static void main(String [] args){
        ListIterator<Object> rev2 = new ArrayList<>().reversed().reversed().listIterator();
        rev2.add("a");
        rev2.remove();
    }
}
---------- END SOURCE ----------