captured wildcards on the first level do not prevent binary operator to be applicable (IDEA-89640)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/genericsHighlighting/WildcardTypes.java

@@ -231,4 +231,16 @@ class IDEA91481 {
   class BeanBuilder<<warning descr="Type parameter 'T' is never used">T</warning>> {}
   class Bean {}
   class DirectBean extends Bean {}
+}
+
+class IDEA89640 {
+  interface X {}
+  class Y<<warning descr="Type parameter 'T' is never used">T</warning> extends X> {}
+
+  public static void main(String[] args) {
+    Y<? extends X> a = null;
+    Y<? extends X> b = null;
+    boolean flag = a  != b; 
+    System.out.println(flag);
+  }
 }