Facets are not loading for custom Solr index

Question

We are working on a new site and have created a new index for it. This index is similar to sitecore_sxa_web_index except for the root path. Instead of /sitecore, we have /sitecore/content/<Tenant Name>/<Site Name> as a path.

We are facing an issue where facets (SXA tags) are not being populated in CheckboxAccordianFilter but search results are properly populated.

There are no errors related to the search in a log file.

We tried to debug the code and observed that no facets are returned by the below line, facetItems workes fine.

facets = facetItems.Any()? FacetService.GetFacets(query, facetItems, model.Languages, out queryTimer) : new List<Facet>();

However, when we change the path to /sitecore we get the list of tags.

Here is the config for the custom index

<?xml version="1.0" encoding="utf-8"?>
<configuration xmlns:patch="http://www.sitecore.net/xmlconfig/" xmlns:role="http://www.sitecore.net/xmlconfig/role/" xmlns:search="http://www.sitecore.net/xmlconfig/search/">
  <sitecore role:require="Standalone or ContentDelivery or ContentManagement" search:require="solr">
    <contentSearch>
      <configuration type="Sitecore.ContentSearch.ContentSearchConfiguration, Sitecore.ContentSearch">
        <indexes hint="list:AddIndex">
          <index id="someIndexName" type="Sitecore.ContentSearch.SolrProvider.SolrSearchIndex, Sitecore.ContentSearch.SolrProvider">
            <param desc="name">$(id)</param>
            <param desc="core">SomeIndexCoreName</param>
            <param desc="propertyStore" ref="contentSearch/indexConfigurations/databasePropertyStore" param1="$(id)" />
            <configuration ref="contentSearch/indexConfigurations/defaultSolrIndexConfiguration" />
            <strategies hint="list:AddStrategy">
              <strategy ref="contentSearch/indexConfigurations/indexUpdateStrategies/onPublishEndAsyncSingleInstance" />
            </strategies>
            <locations hint="list:AddCrawler">
              <crawler type="Sitecore.ContentSearch.SitecoreItemCrawler, Sitecore.ContentSearch">
                <Database>web</Database>
                <Root>/sitecore/content/<Tenant>/<Site></Root>
              </crawler>
            </locations>
            <enableItemLanguageFallback>false</enableItemLanguageFallback>
            <enableFieldLanguageFallback>false</enableFieldLanguageFallback>
          </index>
        </indexes>
      </configuration>
    </contentSearch>
  </sitecore>
</configuration>

Do we need to consider anything else while creating a custom index?