Aspen Plus Rplug Reactor With Reactor Jacket Cooling

Why reactor inlet (reactant) temperature have to be same as jacket (used steam) outlet (coolant) temperature. Found that the simulation does not converge for any other cases(if two temperatures are different).

The problem happens with only if jacket are used. The reactor itself converged when we selected single temperature reactor without any cooling medium.

Aspen plus file included. (v11)

Appreciate your response.