Why do views of offsetarrays have one-based indexing if bounds are specified?

New to Julia
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Indexing in Julia follows† the following rule: if b = a[idx] for some vector index idx, then b[j] = a[idx[j]]. Since -1:1 has axes of Base.OneTo(3), b has the same indexes. This is How It Should Be.

But you can do the following:

julia> using OffsetArrays

julia> a=zeros(-1:1);

julia> b = a[Base.IdentityUnitRange(-1:1)];

julia> axes(b)
(Base.IdentityUnitRange(-1:1),)

julia> axes(a)
(Base.IdentityUnitRange(-1:1),)

†or should follow, any violations are a bug

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