PC unable to sleep while innerspace is running

This only started to happen a few days ago, I think after a recent Innerspace update, current Innerspace ver 1.16 build 6700.
As soon as Innerspace is started, this shows up, and exiting Innerspace, it's gone.
AFAIK nothing else changed on my system, anyone else have this problem or can share some insights into what's causing this?
Thanks

C:\Windows\system32>powercfg /requests

SYSTEM:
[DRIVER] Sound Blaster Recon3Di (HDAUDIO\FUNC_01&VEN_1102&DEV_0011&SUBSYS_10280688 &REV_1009\4&13bf641d&0&0001)
An audio stream is currently in use.