Problem #1:
If you check a checkbox, the filter is properly applied (other than problem #2 below) however the checkboxes become replaced by “Undefined” after filtering.
I also have a search filter, and after completing the keyword search, the products are properly filtered, but the checkboxes again become “Undefined”.
Problem #2:
Six products have the tag “Navy 3.0 Evo”, and that count (6) is reflected in the checkbox filter for that tag. However, when performing the filter, the number of products filtered is 7. One product does NOT have the tag “Navy 3.0 Evo” so should not be part of the filter results.
There are other problems I’ve found as well, but they are essentially the same as these issues.