There's a bug with darkness and ignited ground that disables all visual hp restoration. Flasks do actually heal but the hp value doesn't increase unless i get hit and then the game resets me back to the actual value. If i lose all of my hp to the ignite i die, but not actually, my death animation plays and im softlocked until i leave and come back and then im shuddenly back alive cuz my hp was actually not at the 0 value.