v5.0.6 causes bug when swapping 2 series indexes

[Munzey]

Expected behaviour

Be able to right click on two legend items of a stack column chart and swap there position/order by switching their indexes

Actual behaviour

always works when i click the left item first before the right. sometimes swaps their positions when clicking the right item first, but usually makes one item lose its color

Live demo with steps to reproduce

try right clicking 'test2' legend name first then 'test1' and the desired behaviour wont occur with 5.0.6
http://jsfiddle.net/LLExL/6817/ --> 5.0.6
http://jsfiddle.net/LLExL/6818/ --> 5.0.5

Note: Youll need to hit 'run' again everytime you want to try swap the items

Affected browser(s)

chrome, firefox is all ive tested

[TorsteinHonsi]

I have troubles getting the right-click thing to work, but I simplified it here: http://jsfiddle.net/highcharts/Le32owLp/

Something has changed in v5.0.6.

[oysteinmoseng]

Offending commit: ed84e5d