'x.tick.rotate' removes axis labels and x-axis from display

[kborj]

I'm using vue-c3 to render a timeseries bar chart. I am able to rotate the x-axis text clockwise but only up to 180 via the axis.x.tick.rotate option. I need to rotate the x-axis text to either -90 or 270 (last letter of text faces x-axis line) but the chart rendering gets broken: the x-axis is no longer shown.

I'm currently employing CSS tricks to work around the problem but to no avail. has anyone else encountered the same problem, and what approaches were done to address it?

Thank you.