Bug or manual wrong?

[Xietor]

I cast ghost riders on a province where i had a scout. I told the scout (which was stealthed) to attack province.

When the turn hosted my scout attacked the pd before the ghost riders. On p. 71 of the manual it lists magic battles as 6, and battles caused by movement and other movement like break siege as 13 and 14.

I have done this tactic numerous times in the past, and can never recall the scout attacking before the ghost riders. Could this be a bug introduced in the most recent patch?