Duplicant consumes no oxygen from atmosphere when gasping for air while wearing an empty Atmo Suit.

If a Duplicant is wearing an Atmo Suit that runs out of oxygen, they will begin suffocating and seek out an oxygen atmosphere. However, once they remove their helmet and begin to recover their breath, no oxygen is consumed from the atmosphere even though their breath bar is refilled. This results in a Duplicant being able to survive indefinitely without a need for additional oxygen.

The expected behavior is in the video below and is produced by changing the return value of GasBreatherFromWorldProvider.IsBlocked()

GasBreatherFromWorldProvider
public bool IsBlocked() => this.oxygenBreather.HasTag(GameTags.HasSuitTank) && !this.oxygenBreather.HasTag(GameTags.RecoveringBreath);