The way Goodberry is implemented is already quite bad compared to the official rules, but the fact that Goodberry + Life Domain does not work together is kinda crazy. It's a neat little combo that does not break anything. I am playing at the hardest difficulty and I can long rest after every encounter because I have infinite food, so this is not a balancing nerf. It's most likely an oversight or an engine issue (the game not recognizing that the Goodberry's healing came from a specific player, that alters the healing.) This pretty much makes multiclassing with druid useless, which is a real shame.