When items are put into a bundle,they won’t drop out of the bundle

I was going to get materials for something I’m building,and I found a bundle in a villager chest so I put some of my items into it. Then when I get back to my base I try to drop some of the items and they wouldn’t yknow come out. So I think” maybe this one is glitched” so I grab one of my other bundles and try to drop items out of it and it would come out either