diff --git a/src/cliproxy/quota/quota-label-sanitizer.ts b/src/cliproxy/quota/quota-label-sanitizer.ts
index 438527ea..b7279eb1 100644
--- a/src/cliproxy/quota/quota-label-sanitizer.ts
+++ b/src/cliproxy/quota/quota-label-sanitizer.ts
@@ -11,8 +11,8 @@ const TERMINAL_CONTROL_CHARS_REGEX = /[\u0000-\u001f\u007f-\u009f]/g;
  * labels must be constrained to safe, printable strings before they reach the
  * terminal.
  */
-export function sanitizeCodexFeatureLabel(value: unknown): string {
-  if (typeof value !== 'string') return CODEX_FEATURE_LABEL_FALLBACK;
+export function sanitizeCodexFeatureLabelOrNull(value: unknown): string | null {
+  if (typeof value !== 'string') return null;
 
   const sanitized = value
     .replace(TERMINAL_ESCAPE_SEQUENCE_REGEX, '')
@@ -21,5 +21,9 @@ export function sanitizeCodexFeatureLabel(value: unknown): string {
     .slice(0, CODEX_FEATURE_LABEL_MAX_LENGTH)
     .trimEnd();
 
-  return sanitized.length > 0 ? sanitized : CODEX_FEATURE_LABEL_FALLBACK;
+  return sanitized.length > 0 ? sanitized : null;
+}
+
+export function sanitizeCodexFeatureLabel(value: unknown): string {
+  return sanitizeCodexFeatureLabelOrNull(value) ?? CODEX_FEATURE_LABEL_FALLBACK;
 }
diff --git a/src/commands/cliproxy/quota-subcommand.ts b/src/commands/cliproxy/quota-subcommand.ts
index 2efdbd05..428d0f65 100644
--- a/src/commands/cliproxy/quota-subcommand.ts
+++ b/src/commands/cliproxy/quota-subcommand.ts
@@ -18,7 +18,10 @@ import {
 } from '../../cliproxy/accounts/account-manager';
 import { fetchAllProviderQuotas } from '../../cliproxy/quota/quota-fetcher';
 import { fetchAllCodexQuotas } from '../../cliproxy/quota/quota-fetcher-codex';
-import { sanitizeCodexFeatureLabel } from '../../cliproxy/quota/quota-label-sanitizer';
+import {
+  sanitizeCodexFeatureLabel,
+  sanitizeCodexFeatureLabelOrNull,
+} from '../../cliproxy/quota/quota-label-sanitizer';
 import { fetchAllClaudeQuotas } from '../../cliproxy/quota/quota-fetcher-claude';
 import { pickMostRestrictiveClaudeWeeklyWindow } from '../../cliproxy/quota/quota-fetcher-claude-normalizer';
 import { fetchAllGeminiCliQuotas } from '../../cliproxy/quota/quota-fetcher-gemini-cli';
@@ -280,9 +283,12 @@ function inferCodeReviewCadence(
  * Strip a leading "GPT-X.Y-Codex-" prefix from a feature label and turn the
  * remainder into a Codex-prefixed display name. Other labels pass through unchanged.
  */
-function prettifyCodexFeatureLabel(featureLabel: unknown): string {
-  const trimmed = sanitizeCodexFeatureLabel(featureLabel);
-  if (!trimmed) return 'Additional';
+function prettifyCodexFeatureLabel(featureLabel: unknown, fallbackLabel?: unknown): string {
+  const trimmed =
+    sanitizeCodexFeatureLabelOrNull(featureLabel) ??
+    (fallbackLabel === undefined
+      ? sanitizeCodexFeatureLabel(featureLabel)
+      : sanitizeCodexFeatureLabel(fallbackLabel));
   const stripped = trimmed.replace(/^GPT-[\d.]+-Codex-/i, '');
   if (stripped !== trimmed && stripped.length > 0) {
     return `Codex ${stripped}`;
@@ -303,7 +309,7 @@ function getCodexWindowDisplayLabel(
   }
 
   if (window.category === 'additional') {
-    const pretty = prettifyCodexFeatureLabel(window.featureLabel ?? window.label);
+    const pretty = prettifyCodexFeatureLabel(window.featureLabel, window.label);
     if (window.cadence === '5h') return `${pretty} (5h)`;
     if (window.cadence === 'weekly') return `${pretty} (weekly)`;
     return pretty;
diff --git a/tests/unit/commands/cliproxy-quota-subcommand.test.ts b/tests/unit/commands/cliproxy-quota-subcommand.test.ts
index 5c30fc95..955ea422 100644
--- a/tests/unit/commands/cliproxy-quota-subcommand.test.ts
+++ b/tests/unit/commands/cliproxy-quota-subcommand.test.ts
@@ -86,18 +86,31 @@ describe('cliproxy quota subcommand failure formatting', () => {
 });
 
 describe('cliproxy quota subcommand Codex label formatting', () => {
-  it('falls back for non-string cached Codex feature labels', async () => {
+  it('falls back to the cached window label for invalid Codex feature labels', async () => {
     const { getCodexWindowDisplayLabel } = await loadQuotaCommandTestExports();
 
-    const label = getCodexWindowDisplayLabel({
-      label: 'ignored',
-      resetAfterSeconds: 3600,
-      category: 'additional',
-      cadence: '5h',
-      featureLabel: { unexpected: true },
-    } as never);
+    const cases = [
+      { featureLabel: '', cadence: '5h', expected: 'Codex Spark (5h)' },
+      { featureLabel: '   ', cadence: 'weekly', expected: 'Codex Spark (weekly)' },
+      {
+        featureLabel: '\u001b[2J\u001b]52;c;payload\u0007',
+        cadence: '5h',
+        expected: 'Codex Spark (5h)',
+      },
+      { featureLabel: { unexpected: true }, cadence: '5h', expected: 'Codex Spark (5h)' },
+    ] as const;
 
-    expect(label).toBe('Additional (5h)');
+    for (const { featureLabel, cadence, expected } of cases) {
+      const label = getCodexWindowDisplayLabel({
+        label: 'GPT-5.3-Codex-Spark',
+        resetAfterSeconds: 3600,
+        category: 'additional',
+        cadence,
+        featureLabel,
+      } as never);
+
+      expect(label).toBe(expected);
+    }
   });
 
   it('removes terminal control characters from cached Codex feature labels', async () => {