On Windows, when editing your player name in options, or setting a password for Transifex, and pressing ^ (a "dead key" with the german keyboard layout), you would expect nothing at all to get printed, but this key input modifier applying as soon as you press the next character so that you can use it to compose a character such as ô or ĉ. What you get instead (at least in my Windows 7 VirtualBox with german locale, is a backtick immediately when you press the ^ button.
This doesn't happen on Linux, there the ^ key behaves as a dead key as expected.