Some categoryorder creates invisible extra series for boxplot

[deecay]

Hi,

For boxplot, I've found that categoryorder of (total|min|max|sum|mean|median) in boxplot generates invisible data to the plot.

Original baseline with no categoryorder
with categoryorder of 'median descending'

Screenshot. Second plot is the trace with categoryorder.

[antoinerg]

Thank you for reporting this issue @deecay !

[antoinerg]

This problem also occurs with violin. Prior to running calc, we reset the following counters:

plotly.js/src/plots/plots.js

Lines 2750 to 2752 in 795220f

	// how many box/violins plots do we have (in case they're grouped)
	fullLayout._numBoxes = 0;
	fullLayout._numViolins = 0;

Upon sorting the categories, we need to run calc again which doubles the values of those counters and shift all the boxes/violins by a half.