Pioneer DEH-3350UB - File/Track List Mode Bug

I have pioneer DEH-3350UB CD RDS Receiver.

When USB storage device is inserted with full of folders/files with mp3 songs, I can easily browse folder names and file names. But, if the folder/file name is longer than 10 chars, name should scroll on the screen but it isn't. :confused:

While playing songs, file name, folder name, mp3 files ID Tag information is being scrolled without any kind of problem. :yumyum:

Is there anybody face this problem with this kind of problem?

Thanks.