Sort Axis By keeps changing to the wrong field whenever the slicer is being used

Hello,

I have a very furstrating issue:

I have a visual that is sorted properly:

But after using the slicer, the Sort Axis By keeps reverting to the wrong field (and therefore, the order of the bars is wrong):

It's important to note that the report is published from PBI desktop with the correct Sort Axis assignment, but in the report itself it keeps changing...

Any ideas how to fix it?

Thanks!