Resolved
Resolved in: 3.1.0
Blocks offer the option “Show only filter options that would produce results” in the custom search View block.
This option will show only the frontend filters options that would produce results.
The option is not working as expected because you will see all the frontend filter options available regardless if these options will return results or not.
There is currently no workaround for this issue.
We are aware of the issue and will work on it as soon as possible.