fixes #3038

tests/objects/trefobjsyntax3.nim

@@ -0,0 +1,28 @@
+# bug #2540
+
+type
+  BaseSceneNode[T] = ref object of RootObj
+    children*: seq[BaseSceneNode[T]]
+    parent*: BaseSceneNode[T]
+
+  SceneNode[T] = ref object of BaseSceneNode[T]
+
+  SomeObj = ref object
+
+proc newSceneNode[T](): SceneNode[T] =
+  new result
+  result.children = @[]
+
+var aNode = newSceneNode[SomeObj]()
+
+
+# bug #3038
+
+type
+  Data[T] = ref object of RootObj
+    data: T
+  Type = ref object of RootObj
+  SubType[T] = ref object of Type
+    data: Data[T]
+  SubSubType = ref object of SubType
+  SubSubSubType = ref object of SubSubType