Yes, I have seen this. I actually hard have done the requests with URL encoding -- I think this is one of the issues actually.
The code is not identifying and/or encoding the names correctly. I am in the process of bribing our Admin to change them to have underscores/no spaces special characters but no luck yet.
SO, even though I issue the command with the appropriate % encoding (%20, %5C) whatever it is just not working properly.