Ok, so I came here to report a, well, maybe not a bug, but ridiculousness. When you enter a module that has one resource missing (electricity, causing air toxidity), from the outside, wearing your EVA suit, you instantly die. This makes no sense, considering the kerbals would likely keep wearing their EVA suit if the alternative means instant death. I'll admit his stupidity level was quite high, but not quite that bad, and the kerbal should be able to survive without air for some time either way (at least, that's what the game told me).