Missing expression label in chart

[#1]

Hello and good afternoon all,

I started playing with conditional expressions this week and have encountered a peculiar behavior that i can neither 'fix' nor reproduce. Before getting into the task of recreating the chart from scratch again, which would take about an hour, I want to know i won't face the same issue once more.

As you can see in the image, the first expression, Label A, that takes the blue color is missing in the legend. The other two expressions, Label B and Label C, appear as they normally would in the legend.

I have checked and tried several things:

- The label is correctly defined in the expression, yet replacing this string has no effect.

- Removing the conditional 'condition'.

- Reversing the order in the legend.

- Removing the expression altogether and adding it again to the chart.

Any suggestion is welcome! Thank you in advance.

[#2]

Ah, nevermind.

I had accidentally checked off the "Expression as Legend" box.

Oh well.