Select2 + multipart/form-data issue

Hello everyone.
I use select2 in my form as it described in the Chapter 17 and it works perfect until I add enctype=“multipart/form-data” parameter to the form. After that select2 just sends nil to the server (at least req.content.decode shows nil from that data). Other fields work fine.
So can I use select2 in form with multipart/form-data? Is it a Vapor or Select2 issue?

If you have a look in the network inspector in your browser what is getting send in the request? I believe it should work but I’ve never tried