there was always only going to be 1 player in the box. he should've either actually taken on the defender and won a corner, or just passed it back to gibbs immediately to either circulate the ball to someone else or play a cross.
but i agree it's criminal that palace has 6 defenders in the box and we have just giroud in there. but that's what happens when you play a very midfielder heavy lineup. none of those guys really want to be in the box or have any poacher's instinct.