Behavioral about "Use Group Separator" in numeric/currency field

Hi All…
I have this situation: I have a Currecy Field (numeric) that contains the price of product. In the image attached, you can see that parameter “Use Group Separator” is marked but tha data for some record does not show with separator “,”… $8500 does not have the separator but $10,500, yes… Somebody knows why of this behavioral ? … Also, I tried to include the format in GoogleSheet but the behavioral is the same… thanks for your help…

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