The issue here is that the user wants to only show the available options on their frontend filters. This means they only want the filter to display options that will return a result.
We can fix this by using the Custom Search Settings of Views.
If you go to you view, then scroll down to the Custom Search Settings section. Then select the option "Let me choose individual settings manually"
Next we scroll to the section "Which options to display in the form inputs" then select "Show only available options for each input" From here you are able to customize how each filter type will respond to this setting
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