Buffer ist lost when Wifi goes off

Hey,

i really like your app and just got the Pro version. However, i do have a problem:
I have the player set to Wifi only.
Everything works fine as long as i am in my wifi network - a buffer is created, i can pause/play and fast forward later on.

But as soon as my wifi connection ist lost, the buffer is purged.
So lets say i am in a 10 mintes timeshift and my wifi drops, the other 10 minutes are lost.
There is no way to listen to them.

Is this a bug?

Thank you
Lennart

PS: Android 5.0.2, XiiaLive Pro 3.3.0.4