Hi Hubert,
I think my jsfiddle example didn't accurately depict the issue I am seeing. I am not able to reproduce it but I have attached several screenshots. I am on highstock version 2.1.9.
The width attribute of 750 px is not accurately shown for the highcharts-series-group. It somehow says that the width is actually 2497px, which is incorrect. (pic1.png)
highstock.png
not-working.png
In the case that is not working, the y value is a negative number. I am thinking if it is reacting negatively with some highstock code such as the translate function (highstock.png) which is causing the width to be so large. (not-working.png)
working-pic.png
In the case that works, the y value is a positive number and there is no problems. (working-pic.png)
Do you know if there has been any fixes for this issue? Thank you!