Issues with the Hair in Metahuman

After watching a number of YouTube videos and a number of posts here in the forum and still not finding a real solution, I’m now asking the question myself:

Who knows the solution to this problem:

I use version 5.4

The Metahuman’s hair doesn’t stay on his head - but only in a vehicle animation like shown in the picture.

Sorry for my bad English. I’m also new to the Unreal Engine scene.