enoki::packet() does not work with Matrix<DynamicArray, 1>

[anadodik]

Code necessary for reproducing the bug:

#include <enoki/array.h>
#include <enoki/matrix.h>
#include <enoki/dynamic.h>

int main() {
    using Packet = enoki::Packet<float, 4>;
    using Value = enoki::DynamicArray<Packet>;
    using Matrix1 = enoki::Matrix<Value, 1>;
    using Matrix2 = enoki::Matrix<Value, 2>;

    auto matrix1 = enoki::zero<Matrix1>(2);
    auto matrix2 = enoki::zero<Matrix2>(2);

    enoki::packet(matrix1, 0) = 1;
    enoki::packet(matrix2, 0) = 1;

    std::cout << "matrix1=\n" << matrix1 << "\n";
    std::cout << "matrix2=\n" << matrix2 << "\n";

    return 0;
}

This produces the following output:

matrix1=
[[[0]],
 [[0]]]
matrix2=
[[[1, 1],
  [1, 1]],
 [[1, 1],
  [1, 1]]]

As you can see, matrix2 works fine, while matrix1 never gets assigned the value 1. This seems to be a bug to me as I don't see a reason why Enoki should not generalize to 1x1 matrices.

I tried debugging the issue myself, but wasn't able to find the cause. Please let me know if there is any way I can help to get this fixed.