Hi everyone, when i use .matrix() on qml.SpecialUnitary, the matrix i get back is not the same as the one I get when I manually create the SpecialUnitary. I should be getting the same matrix back. Why is this happening? Here is the code.

```
coeffs = theta = 0.3 * np.array([0, 1, 2, 0, -1, 1, 0, 0, 0, 1, 1, 1, 0, 0, -1])
dic = {
"I" : qml.Identity.compute_matrix(),
"X" : qml.PauliX.compute_matrix(),
"Y" : qml.PauliY.compute_matrix(),
"Z" : qml.PauliZ.compute_matrix()
}
mult = None
temp = np.array([[0,0,0,0],[0,0,0,0],[0,0,0,0],[0,0,0,0]])
for i in range(len(columns)):
c = columns[i]
one = c[0]
two = c[1]
mult = np.kron(dic[one], dic[two]) *(1j * coeffs[i])
temp = np.add(temp, mult)
m1 = np.exp(temp)
m2 = qml.SpecialUnitary(coeffs, wires=[0,1]).matrix()
Here, m1 is not same as m2.
```