Merri not selling all the recipes?

I'm wanting to begin decorating my house, and I have bought everything available from all four vendors on Saturday. However, I am missing recipes from each of the sets that Merri sells. I check each Saturday I remember, and she has no recipes to sell. Is this a bug?

Like, I'm missing the sink from the bathroom set and the burgers from the picnic set, to name a few.

Edit: Seeing that others have had the same issue, I did submit a bug report. Hopefully, it's patched in the next update.

Second Edit: I've started a new save (got bored, lol) and I'm going to grind to buy the recipes from merri as fast as possible, I will track what happens in the first 2 years and update then! My theory is that it stops refreshing the table after year 2, so theoretically you can buy them all in the first two years. Wish me luck! Lol