That's a rule you'll generally only find in charity games, or games where both of the dealer cards are dealt face up (Double Exposure).
As you might expect, it's a brutal rule for the player, adding 9% to the house edge. If you see this rule, run the other way, clutching your bankroll.
I understand that some games in Sweden have a version of this atrocious rule, and ties on 17, 18 and 19 are losses.