Cannot use negative distance in spherical representation despite error message #11104

>>> from astropy.coordinates import SphericalRepresentation
>>> from astropy import units as u
>>> SphericalRepresentation(10 * u.deg, 45 * u.deg, 10 * u.m)
<SphericalRepresentation (lon, lat, distance) in (deg, deg, m)
    (10., 45., 10.)>
>>> SphericalRepresentation(10 * u.deg, 45 * u.deg, -10 * u.m)
Traceback (most recent call last):
  File "/home/juanlu/Personal/Astropy/astropy/astropy/coordinates/representation.py", line 1840, in __init__
    self._distance = Distance(self._distance, copy=False)
  File "/home/juanlu/Personal/Astropy/astropy/astropy/coordinates/distances.py", line 187, in __new__
    raise ValueError("Distance must be >= 0.  Use the argument "
ValueError: Distance must be >= 0.  Use the argument 'allow_negative=True' to allow negative values.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/juanlu/Personal/Astropy/astropy/astropy/coordinates/representation.py", line 1843, in __init__
    raise ValueError("Distance must be >= 0. To allow negative "
ValueError: Distance must be >= 0. To allow negative distance values, you must explicitly pass in a `Distance` object with the the argument 'allow_negative=True'.
>>> from astropy.coordinates import Distance
>>> SphericalRepresentation(10 * u.deg, 45 * u.deg, Distance(-10 * u.m, allow_negative=True))
Traceback (most recent call last):
  File "/home/juanlu/Personal/Astropy/astropy/astropy/coordinates/representation.py", line 1840, in __init__
    self._distance = Distance(self._distance, copy=False)
  File "/home/juanlu/Personal/Astropy/astropy/astropy/coordinates/distances.py", line 187, in __new__
    raise ValueError("Distance must be >= 0.  Use the argument "
ValueError: Distance must be >= 0.  Use the argument 'allow_negative=True' to allow negative values.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/juanlu/Personal/Astropy/astropy/astropy/coordinates/representation.py", line 1843, in __init__
    raise ValueError("Distance must be >= 0. To allow negative "
ValueError: Distance must be >= 0. To allow negative distance values, you must explicitly pass in a `Distance` object with the the argument 'allow_negative=True'.