Anyone else notice alot of Chests going missing?

Im playing creature right now, on xbox. I just got a cursed Lure for 5 additional lootaliens, was happy about it, killed all 5 and got 2 chests. Also if i have multiple bosses on the stage theres like a 50% Chance i only get one chest out of like 3 bosses.

Anyone else have this Issue? Is it a Bug? Am i doing something wrong?