WinForms Designer should not modify class fields of generic types outside designer file

src/AddIns/BackendBindings/CSharpBinding/Project/Src/FormsDesigner/CSharpDesignerGenerator.cs

@@ -284,7 +284,7 @@ namespace CSharpBinding.FormsDesigner
 				return false;
 			}
 			
-			return oldType.ReflectionName != newType.BaseType;
+			return oldType.GetDefinition().ReflectionName != newType.BaseType;
 		}
 		
 		string GenerateField(CodeMemberField newField)