Yeah no, num lock disables and enables numbers to be imputed. The matter of a fact is that the click of a 2 button for example does bring up my old message AND types out the number, for example if my older message was "hello" and i have an empty chat box, i click the 2 button and it becomes "hello2". Also i have tried this on both steam and standalone version, as well as re-installed them both so I believe it's a problem of a game rather than my system.