Suit durability reduction doesn't

The skill Suit Sustainability Training is supposed to reduce the durability damage of Exosuits by 25%, but it doesn't. I've dug into the code to investigate (sorry) and by all counts it looks like it should be working, but in practice it isn't. I've attached a save file where Turner has been wearing an Atmo Suit all day and is on his way to take a break.

He has 3 available Skill Points, so Suit Sustainability Training can be learned at any time. Whether or not he visits the Printing Pod, and whether or not he has Suit Sustainability Training, the Atmo Suit always has 62% durability remaining when he takes it off. He's been wearing it all day, which should be in the neighborhood of maybe 8%-10% of the total, so I would expect a durability reduction to leave it at 64% or 65%.