Add test reproducing the bug

crates/meilisearch/tests/search/facet_search.rs

@@ -57,6 +57,116 @@ async fn simple_facet_search() {
     assert_eq!(response["facetHits"].as_array().unwrap().len(), 1);
 }
 
+#[actix_rt::test]
+async fn simple_facet_search_on_movies() {
+    let server = Server::new().await;
+    let index = server.index("test");
+
+    let documents = json!([
+      {
+        "id": 1,
+        "title": "Carol",
+        "genres": [
+          "Romance",
+          "Drama"
+        ],
+        "color": [
+          "red"
+        ],
+        "platforms": [
+          "MacOS",
+          "Linux",
+          "Windows"
+        ]
+      },
+      {
+        "id": 2,
+        "title": "Wonder Woman",
+        "genres": [
+          "Action",
+          "Adventure"
+        ],
+        "color": [
+          "green"
+        ],
+        "platforms": [
+          "MacOS"
+        ]
+      },
+      {
+        "id": 3,
+        "title": "Life of Pi",
+        "genres": [
+          "Adventure",
+          "Drama"
+        ],
+        "color": [
+          "blue"
+        ],
+        "platforms": [
+          "Windows"
+        ]
+      },
+      {
+        "id": 4,
+        "title": "Mad Max: Fury Road",
+        "genres": [
+          "Adventure",
+          "Science Fiction"
+        ],
+        "color": [
+          "red"
+        ],
+        "platforms": [
+          "MacOS",
+          "Linux"
+        ]
+      },
+      {
+        "id": 5,
+        "title": "Moana",
+        "genres": [
+          "Fantasy",
+          "Action"
+        ],
+        "color": [
+          "red"
+        ],
+        "platforms": [
+          "Windows"
+        ]
+      },
+      {
+        "id": 6,
+        "title": "Philadelphia",
+        "genres": [
+          "Drama"
+        ],
+        "color": [
+          "blue"
+        ],
+        "platforms": [
+          "MacOS",
+          "Linux",
+          "Windows"
+        ]
+      }
+    ]);
+    let (response, code) =
+        index.update_settings_filterable_attributes(json!(["genres", "color"])).await;
+    assert_eq!(202, code, "{:?}", response);
+    index.wait_task(response.uid()).await;
+
+    let (response, _code) = index.add_documents(documents, None).await;
+    index.wait_task(response.uid()).await;
+
+    let (response, code) =
+        index.facet_search(json!({"facetQuery": "", "facetName": "genres", "q": "" })).await;
+
+    assert_eq!(code, 200, "{}", response);
+    snapshot!(response["facetHits"], @r###"[{"value":"Action","count":2},{"value":"Adventure","count":3},{"value":"Drama","count":3},{"value":"Fantasy","count":1},{"value":"Romance","count":1},{"value":"Science Fiction","count":1}]"###);
+}
+
 #[actix_rt::test]
 async fn advanced_facet_search() {
     let server = Server::new().await;