New numeric range slicer behaviour

I have a slicer (filter) where year from a date table is specified as the field to use
Before I enabled the preview of the numeric range slicer, the slicer is exactly how I want it, listing distinct years (see first screenshot)
When I enabled the preview of the numeric range slicer, it changed the look of my existing slicer to that in the second screenshot

I don't want the new look for my slicer as I want my users to select distinct years, and I have not been able to figure out how to get back the old look and feel of my slicer
I created from scratch, etc., but to no avail

I know I can turn off the preview of the numeric slicer, but I am afraid that once this comes out of preview, I am stuck with the new look

Any suggestions, thanks all,