It’s always been this way if you use ‘joinsquad (commander name) thingy. Not saying it’s not an issue, but it’s not new,We have certain players on enemy servers who do it to disrupt certain commanders, the best current containment is to lock subgroupsso they are stuck in the ‘lobby’ subgroup 1. Then assign a really tenacious kicker......A fix would be great but don’t hold your breath.