Hello,
in effects I observed, that 0 groups under groupoing and one group is the same. zero groups schould be individual effect and one group that everthing does the same. on the wheel you can selevt 1, but nothing changes and in the effect spread sheet it say still “off” under grouping

We do not really support “individual effect” at the moment. Both 0 and 1 mean “no grouping”. As such this is more of a feature request than a bug.