sns.lmplot doesn't handle ax keyword correctly

import pandas as pd

import pylab as plt
import seaborn as sns
print sns.__version__   # 0.5.1

df = pd.DataFrame({"A":[1,2,3],
                   "B":[4,5,7]})
fig, ax = plt.subplots(1,1)
sns.lmplot("A","B",df,ax=ax)
#sns.regplot("A","B",df,ax=ax) # regplot works as intended
plt.show()

The output with version 0.5.1 looks like:

[ferreiraleo]

How can I plot any seaborn scatter plot that supports subplots and hue???

[mwaskom]

@gibsondanield read the rest of the sentence:

Understanding the difference between regplot() and lmplot() can be a bit tricky. In fact, they are closely related, as lmplot() uses regplot() internally and takes most of its parameters. However, regplot() is an axes-level function, so it draws directly onto an axes (either the currently active axes or the one provided by the ax parameter), while lmplot() is a figure-level function and creates its own figure, which is managed through a FacetGrid.