A facade light class inherits only java.lang.Object (EA-91597 - NPE: KtLightClassForFacade.getClsDelegate)

compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/KtLightClassForFacade.kt

@@ -210,6 +210,10 @@ class KtLightClassForFacade private constructor(
 
     override fun getElementIcon(flags: Int): Icon? = throw UnsupportedOperationException("This should be done by JetIconProvider")
 
+    override fun isInheritor(baseClass: PsiClass, checkDeep: Boolean): Boolean {
+        return baseClass.qualifiedName == CommonClassNames.JAVA_LANG_OBJECT
+    }
+
     override fun hashCode() = hashCode
 
     private fun computeHashCode(): Int {