Bug report

Bug summary

Adding hatches results in a change in the face color of bars. The problem occurs when saved as PDF. Everything is ok with png.

Code for reproduction

importmatplotlib.pyplotaspltfig,ax=plt.subplots()ax.barh(2,4,edgecolor='black',facecolor='green',alpha=0.3)ax.barh(3,4,edgecolor='black',facecolor='green',hatch='///',alpha=0.3)fig.savefig('hbarplot.pdf')fig.savefig('hbarplot.png')

Actual outcome

Expected outcome

The plot in the pdf file to be the same as the one in png file.

Matplotlib version

• Operating system: Windows 10
• Matplotlib version: 3.0.3, conda, default
• Matplotlib backend (print(matplotlib.get_backend())): Qt5Agg or module://ipykernel.pylab.backend_inline (problem occurs with both)
• Python version: 3.7