Main mod
You may have noticed that you can purchase a wedding cake from the sims if they have the maximum gourmet cooking skill. However, you can't place the cake in the world ('You can't move an object that you don't own'), nor can you cut the cake or feed a spouse.
This is because the ownership setting for crafted objects is messed up. I replaced an action with a more general one, which suits all objects, properly assigns ownership and therefore fixes the issue.
A fix for purchasing via the computer or from market stalls is not needed, as this works as it should.
Purchase interaction in the Wedding category
I've also implemented a small optional mod that moves this interaction from 'Friendly' to 'Wedding', as I think the latter is a more appropriate place for all wedding related things.

Compatible with 1.115-1.116 Game Version.
REQUIRED
Wedding Stories
CONFLICTS
For the main mod – mods that change purchase_WeddingCake_Sim interaction
For the module – mods that change Pie Menu Category for purchase_WeddingCake_Sim interaction
I don't know any of them, though.
TRANSLATION
Not needed
INSTALLATION
For both mods just unzip archives in the Mods folder
DOWNLOAD
HERE (Public Access 19.07)
P.S. I can only help if you provide me with the details of any issues you are experiencing. Read THIS before writing a bug report (via the link below, not in the comments section).