Metahuman Hair disappears when exported in AR template (5.0.3)

Hello,
I imported a Metahuman to the AR template and gave it an idle pose animation. In the viewport the hair is always visible no matter the distance but as soon as I package the project and test it on my android phone the character is bald.

Does anyone know how to fix this?

(The character uses a hairstyle that is currently marked as under development. I tried adding the character to a third person scene and forcing the LOD to be 1 but it didn’t help.)

Thanks in advance!