Anencephal: No, it was never necessary. According to exact rules of Chess, such situation must be reported to the tournament director [me] who decides if a draw should be declared or not.
(hide) If you are waiting for your turn, click on "change" next to the "refresh" on the main page, then set refresh the page to 30 seconds to get your turn to move displayed faster. (Servant) (show all tips)