We are running on v1.8.1.2, using CentOS. Not sure what the version of Cent OS, but I think it is version 6.
I spoke with the user again and got more info on the issue. It seems that if she uses a pdf editor, like Nitro PDF, to do a "save as" for the file to a different name and then upload the new file to OS Tickets, then it shows the correct name. If she takes the original file and do a "rename" by right clicking on the file, then OS Ticket would show the original file name instead of the new name.
This is happening on all files that gets renamed by using the right click method.