djay app supports multi byte file name ?

Today I purchased djay app, and now playing with it.
I noticed that it has multi byte file name handling.

My mp3 files have file name in Japanese, djay app is not able to load some of them with error “could not load track”.
If I rename the files with alphabet only, djay can load and play them.
And interestingly, if I restore the files name, meaning back to Japanese name, djay can play them.

Is this a known issue ??