Golden Rivett;
At your trial, was the AP engaged?
When I tried in SIM, an ILS & RWY selected on MCDU, only I overwrite the front course around 5 degree different than original. Then the LAND mode did not display and A/P disconnected. I consider it consists with the image below except here it advises to disengage A/P , but when I tried, it automatically disengaged.