Versions should be displayed when the parameter is selected in the created vs resolved charts.
I started to investigate displaying vertical lines using solutions proposed in https://www.geeksforgeeks.org/how-to-draw-a-vertical-line-at-a-particular-point-on-the-x-axis-using-chart-js/ and https://stackoverflow.com/questions/36329630/chart-js-2-0-vertical-lines/45092928#45092928 but without success so far.
