Lowercase folder names

I searched for topic about this issue but I've found nothing.
So the problem for me is that everytime I browse user files and download folders, it's name comes in lowercase letters. I know it's not a big issue, however I would be glad if someone could tell me if this has been done on purpose (and why), or is it just a bug on my side. I think it would be a great comfort if the case of the letters were as originally intended.