Happy new year! I just did the practice problem
and I get the result that the blown insulation is OK over the living room but not over the shower. Mould growth is not a problem but rot potentially is because the moisture levels in the OSB decking and cellulose insulation are close to the 20% level at which decay will start to occur with a gradual upward trend. See images below. Is that the conclusion that others came to? Did you get similar graphs?
I did get 415 convergence failures even with adaptive time step control switched on, is that something to be concerned about?