After using the Metro Pass once, it disappears from my inventory. After it's vanished, loading a saved game doesn't work for some reason, so I'm forced to start over. According to the inventory description, it does give the user "infinite rides" so I believe it's a bug.

me too!

just happened to me as well.

Yeah, same thing kept happening to me. 

Same here : /

Nothing I've tried has worked, it happens in all locations, saving/not saving after you get the pass doesn't work either, nor saving/not saving in the new location

same here

+1

It also vanishes after one use in

vapor-trails-win-exe.zip 97 MB

Version 84

if you go to sludge wastes there is a small chance it will work permanently 

I'm stuck too!