Options in facets disappear when more than one value is selected We have setup a custom search with Search Api and Search API Solr Search. In a facet we want to allow the selection of multiple values, with the normal link widget. We have configured the facet to use the OR operator. Everything works as expected until we select more than one value. With more than one value selected, the search result is still correct, but all other options disappear. This is not the behaviour we want, we would like to continue displaying all options, in the same way it works after the user selected a single element.
This is a bug with solr 3.5 and the search_api_solr module, the bug is described here:https://www.drupal.org/node/2474661 the bug report includes a patch that fixes the issue. With the patch in place everything works as expected.