(...) but they are wider than the spacing allows for. They are fine as long as they follow a whitespace character.
That's it, keystroke characters from "⌥⌘S" are overlapping each others, so they're totally unreadable in TM, while this problem exists neither in TextEdit nor Mail (those apps displays them correctly). I think then it is just TM problem, that counts the width for those characters incorrectly.
Cheers,