And not to mention all the dairy products were replaced. Sometimes it's hard to guess how the replacements "react" in the cooking process. The oat milk for example is not as homogenous as cows milk. The solid and liquid parts separete from each other while cooking. I noticed this already several times before. Sometimes the results are different from what you expect by veganizing recipes. One has to experiment with different ingredients. It's always trial and error until a satisfying result.
Thank you for your kind words!