I really don't get some of it. I remember Olly G having his shirt literally ripped off his back so he had to replace the rag with a new shirt. Not given as a foul. WTF?
Also, I once saw Cesc round the keeper who, with arm at full stretch on the floor, raised his hand to clip Cesc on purpose. Cesc stumbled, tried to stay on his feet but with the lost speed, the angle was wider and he hit the outside of the post.
Not given. Had he gone down, then it's a pen and a straight red for the 'keeper. Cesc tried to be a gent and just get the goal without having the 'keeper sent off, but the ref wouldn't call it back for the foul. This is insane.
But re: Gabby, shirts etc. I think they should change the rules one summer. Anyone who grabs an opponent's shirt or arm at a corner gives a foul. VAR looks. The first person to do it is done. So it's either a FK or a pen. It would be messy at first but by the end of the season no-one would be doing it.