This is an odd one, and I am using SAM 2019.4.1 with current orion hotfixes. The line charts (ie; system events on node: AD AppInsight and latches and locks: SQL AppInsight) are vertically pushed up. The data is all there and the chart works properly. But the vertically spacing is not correct and they shift about up and vertically closer together (loss of vertical spacing/buffer). So the bottom entries show the numeric value but the line charts are actually above them. This seems to affect multiple webservers and browsers which eliminates an easy single fix.
Thanks
Marc