More and more teams are doing this against teams like ourselves who can counter quickly. Villa was a good example.
It was particularly infuriating when Grealish hauled back one of our players breaking from outside our own box. The free kick was given but no mention was made of him also picking up the ball and running off with it. It was a double whammy preventing an attacking opportunity. A yellow card in my opinion.
Even more galling when you consider the slight contact Grealish often goes down under, earning free kicks and yellow cards!