Multiple calls to FacetGrid.set_titles() create misaligned margin titles

I’d like to use multiple calls to FacetGrid.map() to layer multiple outputs. However, the right margin titles become misaligned, because each call to map() triggers an additional set_titles() call, and it appears the inferred bounding box coordinates are changing.

Here’s a minimal working example from v 0.5.1:

import numpy as np
import seaborn as sns
import matplotlib.pyplot as plt
sns.set(style="darkgrid")

tips = sns.load_dataset("tips")
g = sns.FacetGrid(tips, row="sex", col="time", margin_titles=True)
bins = np.linspace(0, 60, 13)
g.map(plt.hist, "total_bill", color="steelblue", bins=bins, lw=0)
g.map(plt.hist, "total_bill", color="green", bins=bins, lw=0)

The following also reproduces the problem:

g2 = sns.FacetGrid(tips, row="sex", col="time", margin_titles=True)
g2.map(plt.hist, "total_bill", color="steelblue", bins=bins, lw=0)
g2.set_titles()

[parchd-1]

This is still an issue in current versions of seaborn and matplotlib. #612 may have improved things for some cases, but I ran into this because the new titles were shorter than the originals.

A comment on #612 says that the hack described here no longer works.

I didn’t realise this was a know issue until coming to report it, so my solution for anyone facing this in the future was the following before the final call to set_titles:

for row in g.axes:
    row[-1].texts = []

Leaving it there in case it can help anyone in the future.

[mmmatthew]

My figure is a grid of heatmaps that use annot=True to display values within the cells. However, the solutions presented here remove all text from the figure before redrawing. Is there a way to only remove the undesired titles and not other text?