Yeah, in the next update we are making bags purchasable and it will just increase the size. This was probably the bug I hated the most. You have to know which small bag suits you so you don't lose the bag. I do have it written in the Description of the game on the page.
Yeah, and I still lost 2 other bags after realizing that. Slow learner. Got up to 350 or so kills trying to grind out max everything but had to give up and go to bed. :) There was a point at about mid-armor that I stopped taking damage. Obvious just a concept thing but a few small tweaks and it can be a bit more challenging.