Description

When using an item field value to build a computed index field value, the field-level language fallback values are not used. This can lead to '$name' values is search results when using SXA filter components.

Note: using SXA is not the only way to encounter the issue. It can also occur when using custom computed index fields.

Solution

• For Sitecore XP versions 8.1 rev. 151003 (Initial Release) - 9.0 rev. 180604 (Update-2):
  download and install the patch Sitecore.Support.96931 (to install the patch follow the instructions from the readme file inside the archive).
  
• For Sitecore XP versions 9.1 rev. 001564 (Initial Release) - 9.2 rev. 002893 (Initial Release):
  the logic of custom computed index fields should be wrapped with LanguageFallbackFieldSwitcher as follows:
  

  public override object ComputeFieldValue(IIndexable indexable)
  {            
      bool enableItemFallback = Index.EnableItemLanguageFallback;
      bool enableFieldFallback = Index.EnableFieldLanguageFallback;
      using (new LanguageFallbackItemSwitcher(enableItemFallback))
      {
          using (new LanguageFallbackFieldSwitcher(enableFieldFallback))
          {
              //logic of the custom computed index field
          }
      }
  }