Bug report

Bug summary

When plotting a bar graph of some data from np.histogram on several different axis the outcome always slightly differs from each other.

Code for reproduction

import numpy as np
import matplotlib.pyplot as plt

data = np.random.uniform(0, 100, size = 100)
hist, bins = np.histogram(data, bins=100)

fig, ax = plt.subplots(ncols = 3)

for a in ax:
    a.bar(bins[:-1], hist)

Actual outcome

Expected outcome

The same barplot three times.

Matplotlib version

• Operating system: Ubuntu 18.04
• Matplotlib version: 3.0.2
• Matplotlib backend (print(matplotlib.get_backend())): module://ipykernel.pylab.backend_inline
• Python version: 3.7.1
• Jupyter version (if applicable): IPython 7.2.0

Matplotlib installed via standard conda channel.