Hi Markus, are you referring to this option?
For the reference dropdown the "empty option caption" is not the same as the placeholder text, it is just the first value shown in the dropdown resulting in clearing the filter.
What I am looking for is a text that is already displayed inside the input field when opening the page.
The other filter options have a placeholder text as seen in my screenshot. For the multi-select dropdown via reference that option seems to be gone in Mendix 10.
Something along the line of "Select your country..." inside the dropdown.
If you have any ideas or workaround Micha I'd be super happy!