I have an issue with coffee + soy sometimes where the soy proteins appear to... curdle? cook? It seems to vary by brand of soy and coffee. As a result, I've gen

I have an issue with coffee + soy sometimes where the soy proteins appear to... curdle? cook? It seems to vary by brand of soy and coffee. As a result, I've generally been happier with my wife's recent switch to oat milk. Have you had similar issues?