[Bug] dataZoom misplaced when series has only one data point

[alesmit]

Version

6.0.0

Steps to Reproduce

1. See bug in editor
2. Uncomment or comment the marked data point to toggle between the buggy and correct positioning of dataZoom

Current Behavior

Since version 6.0.0, when a series has only one data point, the dataZoom control is not positioned below the graph as expected — instead, it renders in an incorrect location.

With one data point

With more data points

Expected Behavior

The dataZoom control should be positioned consistently below the graph, regardless of the number of data points.

[alesmit]

As a temporary fix, set showDataShadow to false in the dataZoom object. With only one data point, the absence of the data shadow shouldn't be a problem.