Bug #131573 for CGI-Simple: File uploads not working when filename contains non-ASCII characters?

Hi, I am migrating a web site from CGI.pm to CGI::Simple, but I cannot make work the file upload feature when the filename being uploaded contains non-ASCII characters. Everything works fine with filenames containing only ASCII characters. For example if I create a text file called "café.txt" and upload it, I can get its filename with $q->param('upload_field'), but I cannot get its properties with $q->upload_info(), nor copy it with $CGI->upload($filename). In the first case I get an undefined return value, in the second case an error. It seems like the temporary file is not found. I tried playing with $CGI::Simple::PARAM_UTF8, and tried encoding/decoding the filename with Encode::decode('UTF-8', $filename), but nothing works, I cannot get the file's properties nor copy it. Should CGI:Simple upload feature work with filenames containing non-ASCII characters? Thanks Guido