Exit blinking chat cursor with Esc

[Knowmercy]

May be an easy way im overlooking to do this but -

when you press enter, or your "reply tell" hotkey you begin chatting with a blinking cursor. how do you quickly exit out of this and begin moving around again if WASD is bound to movement, rather than just typing wassddasdssa, and being forced to shift+down, then enter to exit out of "typing" mode?