No birthday cakes work fine for me and the interaction is not greyed out, also when I did test it on a table, it was a square one.
EA StaffNo, I did play with a mod that helps with MWS, and I was able to do majority of the wedding fine, as buggy as the pack is, I can do everything else with the wedding cake but cut it with spouse.
EA StaffI do currently have MCC in my mods folder so I am not sure how valid my observations are but I noticed that outside of the wedding ceremony my sims can cut the cake just fine when it is placed on the center slot of any normal (4 seats) dining table. During the ceremony the option is given but the second sim just won‘t react to it. When you try to place a preselected wedding cake on a table via the pie menu during the wedding ceremony, it is also not placed properly and the interaction is greyed out.
In general it seems to me that a lot of the wedding interactions work fine unless you start the actual ceremony event. I was building a venue (a park) to have a wedding at and while building-and-testing most things worked (sending sims down the aisle or cutting the cake for example) which absolutely didn’t work anymore when I started the actual ceremony.
