Pichu's changing B and down-B properties

[NKArthur]

In a match of Pichu vs Pikachu, Pichu's Neutral-B will not remain static. It will move as Pikachu's Neutral-b.
And Down-B changes to have pikachu's Spike.

 

[Dusk]

I did some testing with it Arthur and I couldn't replicate the results so I don't know what caused it to stop working for those matches.