Step to reproduce
1. Create folder "test"
2. Upload MBCS names' file (I attached sample txt file) into test folder
3. "Download as Zip" test folder using Windows client ( and confirm test.zip is downloaded)
4. Open test.zip
Problem : MBCS file name is garbled in Windows because CharacterSet of file names is Shift_JIS in Windows. So in Mac OS, not garbled.