Hi Michael,
Thanks for contacting Syncfusion Support.
We have analyzed your query and tried to reproduced the reported issue in our sample but not able to reproduce the issue. And we suspect that you have set the range for xAxis in sample level when change the data.
We have prepared the sample using dynamically change the more and less data using drop down box and attached in the below location link.
If you still face any concern, kindly revert us with issue reproducing sample or modified the attached sample along with replication steps and also currently using Essential Studio product version. This will be easy helpful to find the issue and to provide the exact solution sooner.
Please let us know if you have any concern.
Regards,
Saravana Kumar K.