Hello Marius,
Actually it depends on how you are configuring the keyboard layout, if is in within the US/English pack or you are downloading the entire FoD (Features on Demand) for the Italian Language.
If you would like just to have the Italian keyboard without having all features like Speech recognition or Text-To-Speech and other features included into the separate Italian FoD you can just add the Italian Layout into the US/English pack like the below screenshot
Alternatively, if you would like to benefit of the other features for the Italian language, you can go ahead and download the pack.
So in conclusion is neither a bug or a new feature, you can replicate the identical steps on a Windows 10 machine.
I hope that it helps you
Best Regards,
Emanuel