diff --git a/crates/agent-gui/vite.config.ts b/crates/agent-gui/vite.config.ts
index a5e11af6c..7d011244e 100644
--- a/crates/agent-gui/vite.config.ts
+++ b/crates/agent-gui/vite.config.ts
@@ -30,22 +30,20 @@ export default defineConfig(async () => ({
   },
   build: {
     // Monaco language workers are emitted as indivisible lazy assets (largest
-    // is the TypeScript worker at ~6.6 MB). Application modules are still held
-    // to the 450 KB code-splitting group below.
+    // is the TypeScript worker at ~6.6 MB). Bump the warning limit so those
+    // known-large chunks don't drown out real regressions in the console.
     chunkSizeWarningLimit: 7_000,
+    // NOTE: a previous build config set `rolldownOptions.output.codeSplitting`
+    // with a `liveagent-app` group. That custom chunking split the
+    // `style-to-js → style-to-object → inline-style-parser` CommonJS interop
+    // chain across chunks, and rolldown's `__commonJSMin` thunks failed to
+    // initialize across the chunk boundary — the release bundle crashed at
+    // render time with "require_cjs$N is not a function" (black screen), while
+    // `tauri dev` (no chunk splitting) worked. Disabled here to fall back to
+    // rolldown's default automatic chunking, which keeps that CJS chain intact.
     rolldownOptions: {
       output: {
-        codeSplitting: {
-          minSize: 20_000,
-          maxSize: 450_000,
-          groups: [
-            {
-              name: "liveagent-app",
-              test: /\/crates\/(?:agent-gui|agent-ui)\/src\//,
-              entriesAware: true,
-            },
-          ],
-        },
+        codeSplitting: false,
       },
     },
   },