Now i have 3 worlds (with nether and end) grouped in 3 goups with all shares in groups

It looks like this

group1:
lobby
lobby_the_end
lobby_nether

group2:
creative
creative_the_end
creative_nether

group3:
survival
survival_the_end
survival_nether

And now when any of my players goes through portal (MV portals) between lobby and survival it shuffles his inventory. It look like plugin creates new set of inventory for him and then shuffling beetween survival inventory, lobby inventory and another one inventory. So whenever they want to go to creative world they need to to through portal several times to get survival inventory in survival world. I was testing it in ver. 3 and 4-snapshot.

Update:
I removed all groups (vis ingame commands) and restarted server, still the same result.