Preorder portion selection

I have set up the bar tab system as per the tutorial on the forum. This uses ticket set as pre-order.
I have set up beers with portion sizes ( half / pint ) .
Normal tickets will allow selection of portion size either using auto-select or by selecting the product.
When using a bar tab which is a preorder type ticket the portion selection is not working
This is on version 5 / 59
Any ideas??

Now sorted

lol I should read whole posts before dive in testing…