Kiinde milk storage users

Bree

Hi mommies! So I have a pretty good milk stash in the freezer since I started a couple days after baby was born and he’s now 10 weeks. Well I used one of my frozen milks stored in the Kiinde bags for the first time yesterday and once it started to thaw the bag busted at the top near the screw on cap! I lost almost 2 ounces !! Has this happened to anyone? Is it some kind of defect?!