Why can't I set metafields on mobile app?

[GG9]

I can set all metafields without any problem in my browser. But when I switch to the mobile app, I just can't set any metafields. There's two exceptions though and I have no idea why.

You can see that the last two metafields can be set but not the first two. They're all products metafields. But there's no way to select anything for Geschlecht or Anlass.

Any idea why? I can't figure it out.

[GG9]

I did some research and it looks like a bug in the mobile app. It works in any browser on computers. It even works on mobile devices when using the browser access and not the app. If I set new metafields for a product in the categories that don't work in the app I can't even see them being updated now. The store filters without any problems, even though the mobile app shows nothing. In the browser I see everything as it is with set metafields.

Shopify Support has been notified to confirm this.