This can be something that just took a moment to process on the WikiTree server. As long as it took, I wouldn't worry about it.
I had noticed that you had a name change date and I'm thinking that it's when the adoption happened.
I had modified the adoption box to reflect that with date as the adoption date (located by the name in the box).
I hope it was okay with you. If I was correct, you can remove the information that reflects the date of the name change as it's reflected within the adoption box now.