Thanks for getting in touch!
What version of ShinobiCharts are you using?
I'd recommend trying the following:
- Setting your Y-Axis's width to 1
- Setting your Y-Axis's tickGap to 1 (The tickGap property can be found on it's style.majorTickStyle object).
- Disabling ticks via the showTicks property on your Y-Axis's style.majorTickStyle object
Without looking at your implementation it's hard for us to say exactly what is causing this issue.
If any of the above solutions don't work, could you send us the code you use to set up your Chart's Y-axis.
This would really help us identify the source of your issue.