Gridlines are not appearing at the extreme values of the X & Y axis. I’m using range attribute to control the range.
Below is the codePen link & Image:
Hmm, we clip grid lines that don’t completely fall within the plot area - this might be the situation here.
Increasing the yaxis.range should resolve to just beyond [-50, 50] (e.g [-51, 51]) should make things looks the way you want.