Why is my auto discount failing with multiple products in the cart?

I have a buy x get X set up

the min req is 50.00

from a collection “Xcollection”

Customer gets

1 item from from a collection “Xcollection”

discount = free

use per order = 1

when i test it works UNLESS, i add 1 product from this collection , change the quantity to 2.

so my product is “T-shirt” its in Xcollection and its qty = 2

each shirt is $30 so i have a $60(ish) cart total = condition met

each product is from Xcollection = condition met

so why would this auto discount fail

I noticed if i use the debut theme it duplicates the item and works.. but i am not using that theme.

shopify had me lower the min amount to 20.00 and it works. apparently the wording is confusing, its not really how much the cart is, its how much the custom is spending.

cant really wrap my head around it , but i set it lower and it worked just fine.