Mixed Scatter&Line Plot are broken with datetime axis

[hahahannes]

Description

Steps to Reproduce

1. Create mixed scatter & line chart with datetime x axis
2. Put more than more data point in the scatter series

Expected Behavior

Scatter and Line plot should be drawn

Actual Behavior

Only the line is drawn. The scatter points are missing. When only one data point is used in the scatter series, it will work.

Screenshots

Reproduction Link

https://codepen.io/hahahannes123/pen/QWRRpZZ