Bug report

Bug summary

The ImageGrid class seems to not behave correctly since the upgrade to matplotlib 3.0.0 when the inline backend is used in a Jupyter notebook: the resulting subplots fail to arrange in a grid and are placed on top of eachother. The correct behaviour is reproduced if using the notebook or ipympl backends. Thanks!

Code for reproduction

import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid1 import ImageGrid
import numpy as np

im = np.arange(100)
im.shape = 10, 10

fig = plt.figure(1, (4., 4.))
grid = ImageGrid(fig, 111,  
                 nrows_ncols=(2, 2),  
                 axes_pad=0.1,  
                 )

for i in range(4):
    grid[i].imshow(im)  
    grid[i].set_title('test {0}{0}'.format(i)) 

plt.show()

Actual outcome

Expected outcome

Matplotlib version

• Operating system: Debian 9
• Matplotlib version: 3.0.0
• Matplotlib backend: inline
• Python version: 3.5.3
• Jupyter version (if applicable): 4.4.0
• Other libraries: