In earlier releases, I've added two underscores as a display to make it appear correctly.
Did a quick test and I am not seeing any issues. Are you able to share more details about the custom member list?
Dim MemberListstart As String = "E#Root.TreeDescendantsInclusive.Remove(None)"
Dim objMemberListHeader = New MemberListHeader(args.MemberListArgs.MemberListName)
'Read the members
Dim objMemberInfos As List(Of MemberInfo) = api.Members.GetMembersUsingFilter(args.MemberListArgs.DimPk, MemberListstart, Nothing)
'Sort the members
Dim objMembers As List(Of Member) = Nothing
If Not objMemberInfos Is Nothing Then
' Get the Distinct values ie no duplicate members
objMembers = (From memberInfo In objMemberInfos Order By memberInfo.Member.Name Ascending Select memberInfo.Member Distinct).ToList()
End If
'Return
Return New MemberList(objMemberListHeader, objMembers)
I replicated your member list and still not seeing any issue: