Bug with Application.Caller and IsError or IsEmpty, IsNull, ...

Hi all,

I thing there is a bug in excel 2013 64-bit on win7 because I can't use Application.Caller with IsError(), IsEmpty(), IsNull(), ...
IsMissing() does seem to work though

for example:
Any Cell containing =funcBug() produces this error:
"Careful, we found one or more circular references in your workbook that might cause your formulas to calculate incorrectly"

Function funcBug()
    vTemp = myFunc(Application.Caller)
    funcBug = 3
End Function
Function myFunc(oRange)
    Debug.Print IsEmpty(oRange)
End Function