Using windows for development and linux via github workflows, it seems that there are a couple of differences in the rendered output, you may want to address, so the output becomes more reliable.

Main issues for me are the differences in spacing around the subtitle (xlabel) and the fill-colors in the legend, which are 2 squares on linux and correct rectangles on windows.

the code used to generate these plots is here:
https://github.com/SeidChr/COVID-19-Report-Data-Pipeline/blob/master/src/Plotting/Plotter.cs