highlight jump

I have two data sets which appear correctly

if you visualize the film you will quickly understand the problem

something ovbious I'm missing?

Thanks a lot for your effort!

[realTime.zip](https://github.com/danielgindi/Charts/files/1649562/realTime.zip)

https://www.dropbox.com/s/0dlemhz43q7yql8/Sans%20titre.mov?dl=0

Start by downloading realTime.zip and viewing the linked video to reproduce the reported highlight jump in Charts. The issue names no source file, test, or expected behavior, so identify the affected chart and highlight path before defining a fix; completion criteria are not specified.

Written by the indexing model from the issue text.