It's the middle of the wedding event, they've exchanged their vows, she's baked a cake and put a wedding topper on it, but now she can't "take a piece" or "take a piece together" .. these options are greyed out, with the message "You must wait for the newlyweds to take the first slice."
If we have to wait for the newlyweds to take the first slice before the newlyweds can take the first slice, we have an impossible circle.
I did wonder if having a club gathering active was messing with it, although it's never been a problem before, but ending the club gathering and making just my sim and her spouse a group by themselves didn't fix the problem. She does have the option to "cut wedding cake" but I did that in a previous attempt at this playthrough a few days ago and while she can eat the cake and get a nice moodlet from it, she can't do the tradition of sharing the cake with her spouse.
Also the caterer she paid for never showed up, but that's a different issue. The bride having to bake her own wedding cake in her wedding dress after exchanging vows wasn't how I planned it.
Edit By Crinrict: Adjusted Title fit migrated bug report: [WORKAROUND] Newlyweds can't cut first slice of wedding cake | EA Forums - 11317374
Archived thread had around 56 me toos
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