Hey!
With the new update a new problem got introduced as described in the following thread regarding the Python version https://github.com/microsoft/vscode-python/issues/23649
Since then matplotlib does not work anymore when calling e.g. plt.imshow() from the debug console . An empty window opens without an image inside and it cant be closed either. Only a full stop of the debugger closes it. When calling the same function from the script everything works fine.