diff --git a/e2e/react-start/basic/rsbuild.config.ts b/e2e/react-start/basic/rsbuild.config.ts
index e6ad170a60..23072b6c1b 100644
--- a/e2e/react-start/basic/rsbuild.config.ts
+++ b/e2e/react-start/basic/rsbuild.config.ts
@@ -7,10 +7,7 @@ const outDir = process.env.E2E_DIST_DIR ?? 'dist'
 const startModeConfig = getStartModeConfig()
 
 export default defineConfig({
-  plugins: [
-    pluginReact(),
-    tanstackStart(startModeConfig),
-  ],
+  plugins: [pluginReact(), tanstackStart(startModeConfig)],
   output: {
     distPath: {
       root: outDir,
diff --git a/packages/router-core/tests/new-process-route-tree.test.ts b/packages/router-core/tests/new-process-route-tree.test.ts
index 451ab868c4..1240207c5e 100644
--- a/packages/router-core/tests/new-process-route-tree.test.ts
+++ b/packages/router-core/tests/new-process-route-tree.test.ts
@@ -717,6 +717,16 @@ describe('findRouteMatch', () => {
       const tree = makeTree(['/{$}/c/file'])
       expect(findRouteMatch('/a/b/c/file', tree)?.route.id).toBe('/{$}/c/file')
     })
+
+    it.fails('matches U+0130 wildcard suffixes case-insensitively', () => {
+      // U+0130 is currently the only character whose default lowercase mapping
+      // changes UTF-16 length, so its folded length cannot index the raw URL.
+      const tree = makeTree(['/{$}İ'])
+      expect(findRouteMatch('/valueİ', tree)?.rawParams).toEqual({
+        '*': 'value',
+        _splat: 'value',
+      })
+    })
     it('multi-segment wildcard w/ prefix and suffix', () => {
       const tree = makeTree(['/file{$}end'])
       expect(findRouteMatch('/file/a/b/c/end', tree)?.route.id).toBe(