Disappearing folders in Blinq Photo

Blinq Photo is my favourite iOS application for browsing photos in my home server machine.  But recently I found that it has some tiny odd problem: sometime after Blinq server service started, it will failed to load up all the subfolders of the Photo folder I specified in the preference manual.  I tried and tried and eventually found out that the most reliable way to resolve the problem is by removing the folder from the preference, and then add it back in again.

Let me observe the situation and see if the problem comes back again after reboot.