Manual fade out of Source four S2 Lustr (It was not respond linearly to sub fader)

Hello,

If I fade out the source four S2 Lustr to Sub (Fader), it will not cut out.

All other LED fixtures(Colorsource CYC, another moving, original S4 etc...) are cut out, but only the Source four is slowly out.

If I using  [Channel] [Sneak] [0], S4 LED S2 Lustr was cut out.

However, if I use a fader to perform a manual out, it was not turn out immediately but turn off as if it were a little delayed.

I searched on this site, and similar symptoms occurred 3 years ago and there was written article. (Color source PAR)

The last answer in the document states that it will be updated in the future.

https://community.etcconnect.com/etc_luminaires_fixtures/f/selador-series/18012/colorsource-par-don-t-respond-linearly-to-sub-fader

Am I the only persone who is not satisfied with the response of Colorsurce par with manual fader movement?

For reference, I am using version 2.7.3.

It looks like an old issue. Please let us know anything about this.

Thanks

JJ