Issue with file fields

There might be an issue with file fields.

I have a required file field for a certain role in a certain registration page. It works great in this registration page.

The problem occurs in the general registration page, where I get an error message that this particular file field is required. It's not active for the general registration page. I've checked and this only happens for file fields.

Do you have any idea what goes wrong in my case?

Thanks for the great work.