Clustered column chart shows wrong X axis name

[mafioso]

Hi,

I have the following diagram:

 

It's ok the way it looks like but the problem is that if I use a slicer to see details for just ONE month the following problem occurrs:

Why is the name of the month gone? I don't change anything but every time I use the slicer 2018 is here. problem: 

[v-jiascu-msft]

Hi @mafioso,

Can you share the pbix file? You can delete the irrelevant parts first. It seems impossible.

Best Regards,

Dale