Fixed external subtitles not shown when no languages profile is selected.

frontend/src/utilites/index.ts

@@ -112,13 +112,19 @@ export function filterSubtitleBy(
   subtitles: Subtitle[],
   languages: Language[]
 ): Subtitle[] {
+  if (languages.length === 0) {
+    return subtitles.filter((subtitle) => {
+      return subtitle.path !== null;
+    });
+  } else {
     const result = differenceWith(
       subtitles,
       languages,
-    (a, b) => a.code2 === b.code2 || a.path !== null
+      (a, b) => a.code2 === b.code2 || a.path !== null || a.code2 === undefined
     );
     return difference(subtitles, result);
   }
+}
 
 export * from "./hooks";
 export * from "./validate";