MemberList doesn't work in unfinished If Statement

To show this issue, open your own SDI Application Sample and enter the following:

Dim s As String ' Member list works

If s.Trim() <> "" Then ' Member list works
s = s. ' Member list DOES NOT work


Until I go down and finish the If statement like this:
If s.Trim() <> "" Then

End If

Then, go back into the IF Statement, then it works
If s.Trim() <> "" Then ' Member list works
s = s.Replace( ' NOW IT WORKS - Then memberlist now pops up
End If

Is there a way to fix this, it's really quite annoying...

Thanks