Checked that KT-6623 has been fixed

idea/testData/completion/handlers/basic/NestedTypeArg.kt

@@ -0,0 +1,8 @@
+import java.util.ArrayList
+
+class Pair<T1, T2>
+
+private val v = ArrayList<Pair<Str<caret>>>
+
+// ELEMENT: String
+// TAIL_TEXT: "(kotlin)"

idea/testData/completion/handlers/basic/NestedTypeArg.kt.after

@@ -0,0 +1,8 @@
+import java.util.ArrayList
+
+class Pair<T1, T2>
+
+private val v = ArrayList<Pair<String<caret>>>
+
+// ELEMENT: String
+// TAIL_TEXT: "(kotlin)"

idea/tests/org/jetbrains/kotlin/completion/handlers/BasicCompletionHandlerTestGenerated.java

@@ -60,6 +60,12 @@ public class BasicCompletionHandlerTestGenerated extends AbstractBasicCompletion
         doTest(fileName);
     }
 
+    @TestMetadata("NestedTypeArg.kt")
+    public void testNestedTypeArg() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/handlers/basic/NestedTypeArg.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("SecondTypeArg.kt")
     public void testSecondTypeArg() throws Exception {
         String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/handlers/basic/SecondTypeArg.kt");