Working Light sticking on problem

We are having a ongoing issue of the working light not going out when the sub-master on the Gio is down and we hit [go to cue] [out].

The only way we can get the lights to go out is when we bring the sub to full and back down to zero again. 

We are running the new update. we have been using the same patch/subs for the house lights for years and they haven't changed. 

As far as I can tell the subs have been set up correctly and it does seem like a bug. 

Could we have missed something or is this a potentially known issue?

Cheers,

Matt 

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