Fill worked properly when I tested it, didn’t find it practical. I thought that maybe one shot trigs are more practical. I encourage everyone to test and compare.
Just hold yes to activate all one shots.*
In grid rec mode, it concerns active track, in track mode, in concerns all tracks.
That way you can use one shots as Fill, and use the crossfader or change parameters…
*There is a Fn+Yes function in the Personalize menu. I tried it, disabled it.
Please correct me if I’m wrong or made mistakes!