I have been growing these for many years in game and have a very large garden of Sword Ferns, 67 in total. I always get a few Small Fern housing items. However the last two elder harvests I've not had a single one. I've also noticed I'm getting less Primitive Fern Planters than normal. Clearly someone has fiddled with the drop rates and need to be changed back to what they were. Hopefully this will be done very soon? Thanks KI.