Chart.js Does NOT Support To Update Labels Probably
I released Web App draw graph with Chart.js.
On this Web App, rearrange the bar graphs according to the score.
At first, I used chart.update() method, bars and fill colors were corrected but labels were gotten errors. So I re-implementated to not to update but to destroy and re-draw.
On Original Code
chart.update() is in chart.core.
chart.update() call convertTicksToLabels. This function does not see labels property.