Metahuman not rendering hair when crouching or near wall

Hello! I have a problem with the metahuman’s hair. The thing is, when I get too close to a wall or start walking crouched, the shadow of the hair, and therefore the model, disappears. I don’t know if it’s related to the camera angle or what, but the fact is that I’m going crazy trying a thousand things and I can’t find a solution. Here you can see the problem in more detail: hair-issue - VEED

Thank you in advance!