Please move this to a bugs thread if there is one?
That’s even if it is a bug. But if the fade LFO works like most synths I’ve used, it should fade in the LFO depth. It seems sporadic with a sample I’m using, sometimes I have to back to zero to activate the effect of the fade again.
Is this a bug?
Nevermind, I’m trying run before I can walk!
I see it is dependant on modulation activation mode RTFM 
The LFO Trig mode actually effects the way the FADE parameter works.
If you want Fade to reset you need to select TRIG, ONE or HALF.
It’s not really a useful feature IMO as you would want fade to work on every note regardless of the LFO mode.
Thanks!
I just realised this and edited my post, time I had finished you had answered, thanks for the info anyway.