diff --git a/news/2 Fixes/14727.md b/news/2 Fixes/14727.md
new file mode 100644
index 000000000000..4c336fb2d71c
--- /dev/null
+++ b/news/2 Fixes/14727.md	
@@ -0,0 +1 @@
+Fix workspace symbol searching always returning empty.
diff --git a/src/client/jupyter/languageserver/notebookMiddlewareAddon.ts b/src/client/jupyter/languageserver/notebookMiddlewareAddon.ts
index 9f116d0b4d83..6f8d40f082e8 100644
--- a/src/client/jupyter/languageserver/notebookMiddlewareAddon.ts
+++ b/src/client/jupyter/languageserver/notebookMiddlewareAddon.ts
@@ -294,7 +294,7 @@ export class NotebookMiddlewareAddon implements Middleware, Disposable {
     ): ProviderResult<SymbolInformation[]> {
         const result = next(query, token);
         if (isThenable(result)) {
-            return result.then(this.converter.toIncomingWorkspaceSymbols.bind(this));
+            return result.then(this.converter.toIncomingWorkspaceSymbols.bind(this.converter));
         }
         return this.converter.toIncomingWorkspaceSymbols(result);
     }