  The available data on $|\Delta B| = |\Delta S| = 1$ decays are in good
agreement with the Standard Model when permitting subleading power corrections
of about 15% at large hadronic recoil. Constraining new-physics effects in
$\mathcal{C}_7$, $\mathcal{C}_9$, $\mathcal{C}_{10}$, the data still demand the
same size of power corrections as in the Standard Model. In the presence of
chirality-flipped operators, all but one of the power corrections reduce
substantially. The Bayes factors are in favor of the Standard Model. Using new
lattice inputs for $B\to K^*$ form factors, the evidence of models with
chirality-flipped operators increases, but does not outperform the Standard
Model. We use the data to further constrain the hadronic form factors in $B\to
K$ and $B\to K^*$ transitions.
