mine does it, although its not anything big, same as my previous hiluxes, sames as the 1000KW CATs i maintain, its just the engine still rolling over after fuel signal has been cut.
not sure how bad yours is, but should just be a slight rattle.
it's annoying that's for sure gotta hold the clutch in till it stops or it'll lurch forward even with the hand brake on arrgh !!! but i got used to it pretty quickly had to lol
On a bit of a side note, has anyone noticed how much the motor kicks when it fires up, really surprised me when I was checking out my zd30 before I bought it, new to diesels ha ha.