Sharepoint Server 2016 - Folder with special characters is duplicated on download as a zip

Hi everybody,

I'm working with Sharepoint Server 2016 (customized by previous developer) and I'm facing a issue during the download of a folder with special characters contained in a list. Moving into more details, when I try to download something like this

I get this result on my device:

Could anyone help me? Have you ever met this kind of issue?

Thanks,

Marco