If I run this code in jupyter notebook, I will get two images. The first one will be the image shown in notebook (`%matplotlib inline). And the second one will be an image file named a.png. The image ...
If width_ratios is instead [1,1,0.8], all of the axes appear. I can achieve the desired width ratios if I use GridSpec directly instead of using the wrappers, but it would be nice if the wrappers didn ...