This bug happens in single player mode. When you die the game used to show you what items you had collected and ask you if you want to use a revive. I collected 2 chests then died in single player and it didn't show me anything that I had collected. It just asked if I wanted to use a revive.
Apparently this bug doesn't happen every time since I died later and it showed me one chest that I collected. This is probably related to an older bug where the game doesn't credit you for all the chests you collect.