The Palace manager moved towards the touchline, gesturing for his midfielders to adjust their positions.
He wanted his fullbacks to provide wider options and his central players to move closer to the defenders.
For a few minutes, it seemed to help, but then Wigan found another gap.
It was almost as though Palace were trying to close a zip with one side constantly slipping open.
Every time Glasner addressed one problem, another appeared somewhere else.
Wigan were moving the ball too quickly for the home side to settle, and the second goal arrived through a familiar route.
Joe Bennett, returning from injury, had found himself in a good position on the left.
He received the ball with room to advance, took a few steps forward and looked towards the penalty area.
In the next second, his cross came in, but feeling pressured, Dean Henderson came off his line and reached it, getting both hands to the ball.
The goalkeeper, however, couldn't hold it cleanly.
