When using the US international keyboard layout on Windows, Ctrl+Alt+S doesn't save all files but inputs the character ß. That's not entirely wrong behavior since that's how that keyboard layout is supposed to work, it is a major annoyance in Komodo though. Not even German programmers need that character while coding. Moreover, overriding Ctrl+Alt+S wouldn't make the character inaccessible since it is also available via AltGr+S.