Meetup created with option keep together after last update works different than earlier.
First problem is that the speed is extremly slow, even when in meetup rides only powerhorses 3.5+. And it is slower on flats, than on the hills or downhills 
Second new problem is that in previous meetups strongest rider was on front, and lazy riders was on the back of the group on virtual “rubber”. We were racing toghether on hills, now rider position is totaly random, and blob is realy tight. It removes fun…
Third problem is option “hide” dont worked…
Was everyone in your group on the latest versions of Zwift and Zwift Companion?
Cannot answer this question, really dont know…