ZynAddSubFX reset its sound

[angry_programmer]

Ok, I'm not a musician, so I don't know if I'm doing something wrong, but when I click "Show GUI" and modified the sound, ZynAddSubFX reset to its default sound when I close the GUI.

So is this a bug? Or I need to enable something more?

[musikbear]

Ok, I'm not a musician,

But Welcome to the Forum angry_programmer!
Here are all important links:
http://lmms.io/forum/viewtopic.php?f=1&t=4740
-A few rules and useful forum instructions

I need to know:

* OS (+service-pack-version)
* lmms version