I have tried doing /transfer with the Wisps of Freedom, Dragon Scales, and Dragon Tokens, but they do not stack what so ever. The items do not stack at all. Personally I think it is from the server going to 1.16, but that's me so whatever is wrong I'm not 100% sure about. It's not a needed thing to be fixed, just incredibly annoying.
/transfer does not work with crafting items only tools. You will need to contact ky I believe to get new items as the old ones broke when updating to 1.16
