Issue with Advanced Filter in Compensation Plan

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Hello experts,

I have configured an Advanced Filter in order to select more values simultaneously when filtering compensation plan. If I select one value available in the list, population is correctly filtered.

However, if I select two values or more simultaneously in the Advanced Filter tab, employees are not displayed even if some of them are eligible.

What could it depend on?

Thanks in advanced for your time!
 

Kind Regards,

Valerio