Errors like this one are not important. After all, it is not really an error that affects the function. In software development sometimes texts for GUIs are in a language file, sometimes the texts are hard coded. If they are hard coded and there is no other reason to touch that code, software developers don't.

Most people can relate to "Attenzione" if you're able to understand English. Attention and Attenzione are not that far apart. Yes, you probably have a QWERTY keyboard, I do have a QWERTZ keyboard and there is only a small step for the finger to hit the "Z" instead of the "T".

Much more interesting is this context menu from Stardock's Fences 1.0 that has Finnish text in line 2 and 4:

Attached Files (Click to download or enlarge) (Only available when you are logged in)
Fences Kontextmenu.jpg (50.49 KB, 24 downloads)
Fences context menu

Desktop; i7-2600k, 8 GB mem., Win 10 Pro, BIAB 2017; RB 2017 - latest build
Laptop: i5-2410M, 4 GB mem, Win 10 Pro, BIAB 2017; RB 2017 - latest build