Release time problem

Hello, I noticed a problem on release time.

Example1:
Fader 1: 10 sharpys in positions X
Fader 2: sharpys 10 @ full, release time 2s (with Go off zero and release at zero on flash button + fader @ 0)

If I press and release flash button 2, the intensity released in 0 seconds

Example2:
Fader 1: 10 sharpys in positions X + 10 sharpys@0 %
Fader 2: 10 sharpys @ full, release time 2s (with Go off zero and release at zero on flash button + fader @ 0)

If I press and release flash button 2, the intensity released well in 2s

In fact, the release time is not respected when the fixture returns in default value.

Regards,

Gael