If you watch older 14.1 tournaments - the old timers including Mosconi etc . Always were sure to continuously empty bottom corner pockets as balls accumulated in them . A pocketed ball bouncing back onto the table was a missed ball .Ok so drop pockets are not good for straight pool. Not sure what the chances are of this happening in,8., 9 or 10 ball.
Not much of an issue in rotation games- 9 or 10 ball - but could sometimes be in 8 ball.