I think what you saw was that the child ignores certain traditions. That’s different from ignoring the entire holiday. Kids can give flowers but I can’t remember if it’s a “one and done” thing or if it takes multiple interactions to satisfy the tradition (with a solid gold check mark). The kid could be sad if they didn’t give flowers enough times, or if there was another tradition on there he couldn’t do. Or it could be buggy but I don’t have a child to test it with at the moment. Sounds like a bummer but the moodlet doesn’t last that long and it’s easy to overcome, I think.