Stacked Bars total showing incorrect count values.

[Somasundaram]

Hi Qlikers,

I'm encountering an issue with a Qlik Sense stacked bar chart. While the values within each stack appear to be correct, the total value displayed is incorrect.  Please find the attached charts. 

Dims- Year , Month, Product

Exp- Count (Distinct Product id) - Product id has duplicate 

@Sunny , @ToniKautto @Bastien_Laugiero 

Thanks in advance