I’m having the same problem. When I try to add the bundle to my cart I get an alert yet somehow I’ve had three customer orders of a bundle containing an out of stock item in the past few hours.
There really shouldn’t even be an add to cart button when an item in a bundle is out of stock.
This is marked as resolved but I just installed this on a client site and it was a total nightmare. They suddenly received a handful of orders for a product that was specifically forbidden by one payment processor. Is the fix in this post verified as working? Is a permanent fix on the way.
