I was doing the cross-play beta and got the corrupted strike with my teammates both on console/stadia (I'm on pc) everything went well until the elevator "encounter" (not really sure what to call it), where it wouldn't let us interact with the stone to start it both my teammates left then another joined also on console and they left to then a pc player joined and strolled up to the stone and started the encounter so I'm not sure what the problem was maybe everyone had to be on the same platform or something.