* (bug 2758) Toggling the console while holding keys can put the cgame/ui

keycatchers in a bad place since they see a key press for a key that is
  already in a down state.  Simply clearing the down state of all keys as
  the console is toggled seems like a simple fix.

code/client/cl_keys.c

@@ -1071,6 +1071,7 @@ void CL_KeyEvent (int key, qboolean down, unsigned time) {
 			return;
 		}
 		Con_ToggleConsole_f ();
+		Key_ClearStates ();
 		return;
 	}