WinForms DataGridView Currency Formatted Column Shows Scarab (¤) Instead of Local Symbol ($)

Question

I have a couple of WinForms apps that use datagridviews to display currency fields. I set the columns as currency in this manner:

dgv.Columns["Cost"].DefaultCellStyle.Format = "C2";

However, it seems that after the app has been open for a while, the dollar sign "$" will switch to a scarab (¤).

Once this happens, the user needs to restart the app, and then it will work again for some random amount of time. Is there any way that I can prevent this from happening?

Thanks!