diff --git a/.changeset/hip-points-kick.md b/.changeset/hip-points-kick.md
new file mode 100644
index 00000000000..338fb9beef0
--- /dev/null
+++ b/.changeset/hip-points-kick.md
@@ -0,0 +1,5 @@
+---
+'@qwik.dev/core': patch
+---
+
+fix: the @qwik-handlers aren't properly handled in dev mode for library projects
diff --git a/packages/qwik/src/optimizer/src/plugins/vite.ts b/packages/qwik/src/optimizer/src/plugins/vite.ts
index bf8d48a9f38..32893d7da60 100644
--- a/packages/qwik/src/optimizer/src/plugins/vite.ts
+++ b/packages/qwik/src/optimizer/src/plugins/vite.ts
@@ -665,14 +665,7 @@ export function qwikVite(qwikViteOpts: QwikVitePluginOptions = {}): any {
           );
         };
         // TODO: Removed the "__qwikCityNew" condition in V3
-        const isNEW =
-          (globalThis as any).__qwikRouterNew === true ||
-          (globalThis as any).__qwikCityNew === true;
-        if (isNEW) {
-          return plugin;
-        } else {
-          return plugin();
-        }
+        return plugin;
       }
     },