matplotlib/seaborn: first and last row cut in half of heatmap plot

Question

When plotting heatmaps with seaborn (and correlation matrices with matplotlib) the first and the last row is cut in halve. This happens also when I run this minimal code exa

Answer 1

conda install matplotlib=3.1.0

This worked for me and downgraded matplotlib from 3.1.1 to 3.1.0 and the heatmaps started to behave correctly