  We recall that the chiral unitary approach for the interaction of
pseudoscalar mesons with the baryons of the decuplet predicts two states for
the $\Xi(1820)$ resonance, one with a narrow width and the other one with a
large width. We contrast this fact with the recent BESIII measurement of the
$K^- \Lambda$ mass distribution in the $\psi(3686)$ decay to $K^- \Lambda
\bar\Xi^+ $, which demands a width much larger than the average of the PDG, and
show how the consideration of the two $\Xi(1820)$ states provides a natural
explanation to this apparent contradiction.
