extra minor-ticks on the colorbar when used with the extend option #11510
Description
Bug report
Bug summary
extra minor-ticks show up on the colorbar when it is extended (at either or both ends).
Code for reproduction
import matplotlib.pyplot as plt
import numpy as np
# Making yticks longer in length to highlight the issue
plt.rcParams['ytick.major.size'] = 10
plt.rcParams['ytick.minor.size'] = 4
np.random.seed(seed=12345)
x = np.random.randn(20, 20)
fig, ax = plt.subplots()
im = ax.pcolormesh(x)
cbar = fig.colorbar(im, extend='both')
cbar.ax.minorticks_on()
plt.show()Actual outcome
Matplotlib version
- Operating system: MacOSX
- Matplotlib version: 2.2.2
- Matplotlib backend (
print(matplotlib.get_backend())): MacOSX - Python version: Python 3.6.5
Installed via anaconda (default channel)