Second dimension in bar chart

[Anonymous]

Hi guys I cannot add a second dimension in a bar chart showing the values in the axis, I remember it was possible before, isntead it looks like in the image

now, I found that adding a dummy second expression "0" and hiding the legend will force it to show in the axis, but they are all mixed randomly the buckets are incorrect (see image below), is there a way to fix this? Thanks in advance!

[#2]

Hey, Could you please attach your data?

[Anonymous]

Here's the example QVW