Correct message is not displayed while creating new compound document type in cms

Steps to reproduce:--
1.Login to cms
2.Go to configurations
3.create new "compound type" document type using context menu.
4.Wrong message is displayed ie. "Enter a name and select a super type" for compound type

Expected value:--for compound type it should be name only and not supertype.
Actual result:-->Correct message is not displayed while creating new compound document type in cms

Check screenshot for reference.