Order Email subtotal calculating addon items incorrectly

-- HikaShop version -- : 6.1.0
-- Joomla version -- : 5.3.3
-- PHP version -- : 8.3

Situation: an item with a price of $15, with an addon item priced at $1. When the customer adds 10 items, with 10 addons, the receipt in the email is adding all 10 $1 addon items to each product, making the subtotal calculate each item at $25.
The final total is accurate: $160 ($150 + $10) but the subtotal shows $15 + $10 x 10 items = $250.
This is only occurring in emails, the cart display is correct during checkout.
Edit: I tried turning off Group Options With Product, but it didn't change the subtotal in email previews.