Different derivations of first Noether's theorem [duplicate]

I'm my current studies in Noether's theorem, the two that I liked the most are joshphysics answer to this Phys SE. post, and the derivation in chapter $$4$$ of An Elementary Introduction to Classical Fields by R. Aldrovandi and J. G. Pereira. Johphysics answer is nice because he introduces a notion of variation of a field $$\delta \phi$$ as derivative of a flow instead of the usual treatment of "infinitesimals". He derives Noether's theorem only using what is called "functional variations", wich does not change the integration domain of an action functional $$S[\phi]$$, and affects only the functional form of the fields and its lagrangian $$\mathcal{L}(\phi(x), \partial_\mu \phi(x))$$.

Aldrovandi, however, even using the notion of variations as "infinitesimas", make clear statements about what is going on. Specifically in equations $$4.16 - 4.18$$, he defines the coordinate variation as well as total and functional variation of fields $$\phi(x)$$. And states in the paragraph before page 98 the following:

Let us go back to the action functional $$(4.15)$$. It does not depend on x. Its is a functional of the elds, depending on the integration domain. Variations $$(4.16)$$ and $$(4.17)$$ will have eects of two kinds: changes in the integration volume and in the Lagrangian density. We shall indicate this by writing $$\delta A[\phi] = \int [\delta(d^4x)\mathcal{L} + d^4x \delta \mathcal{L}]$$

In Aldrovandi, the term $$\delta\mathcal{L}$$ is used as a total variation, wich is different from the definition of $$\delta \mathcal{L}$$ used by johphysics.

The result of what is called Noether's first theorem is given by the equation

$$\partial_\mu J^\mu = 0,$$ which is the same for both derivations, but one uses only variation of functional form of fields, and the other uses contributions due to coordinate change, how is that possible?
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