Files with chinese characters not showing

Not sure what happened but files with chinese characters are not showing anymore.

I am not sure this is due to version 1.4. I upgraded few months already. But i seldom used serviio so i am not sure if the problem occured after or before the upgrade. It does work previously.

I have a folder called "songs". There are 6 files in it all with chinese characters. The whole 'song' folder does not appear.

I tried to investigate by changing logging to "debug". However, the files are appearing now. Don't know what's the problem. Seems to be fixed by just a restart of serviio service.