Vaal ruins - co-op issues

When entering Vaal ruins/temple in a party it causes a bug for either player, we join the instance and complete the room it will then not allow the owner of the Vaal ruin to interact with the regal bench etc, it also doesn't allow them to pull levers etc for the vault.

seconded..

Yup had the same issue with my co-op party. Cant interact with any of the workbenches