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The reason for this being that there are no further options. Many sites have logic in place that will automatically redirect a customer to the product detail page when there is only one result matching the search criteria. There is a way to customize this setting using the workbench.
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Customizing This Setting
- Navigate to the Workbench > Data Configuration > Facets.
- Select the facet you wish to modify and click on the green pencil icon to the left of the name.
- Scroll down to the "Checkbox & Link List" section.
- In the image above the Max Number of Filters is set to 1. This means that when there is a minimum of one result, the facets will not display. If you wanted the facets to display regardless, you could set the minimum to zero.
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