diff --git a/CLAUDE.md b/CLAUDE.md
index 8390b60..c97fc34 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -114,7 +114,7 @@ proxy: {
 | 에이전트 | WS | `/api/agent-office/ws` |
 | 부동산 | GET | `/api/realestate/announcements`, `/api/realestate/matches` |
 | 부동산 | GET | `/api/realestate/profile` — 프로필 조회 |
-| 부동산 | PUT | `/api/realestate/profile` — body: `{ preferred_districts: { [district]: tier(S/A/B/C/D) }, min_match_score: int, notify_enabled: bool, ... }` |
+| 부동산 | PUT | `/api/realestate/profile` — body: `{ preferred_districts: { "S": [...], "A": [...], "B": [...], "C": [...], "D": [...] }, min_match_score: int, notify_enabled: bool, ... }` |
 | AI 큐레이터 | GET | `/api/lotto/briefing/latest`, `/api/lotto/curator/usage` |
 | 포트폴리오 | GET | `/api/profile/public` — personal 서비스 |
 | 포트폴리오 | POST | `/api/profile/auth` — personal 서비스 |
diff --git a/src/pages/subscription/components/DistrictTierEditor.jsx b/src/pages/subscription/components/DistrictTierEditor.jsx
index 21b5b1f..fcf8829 100644
--- a/src/pages/subscription/components/DistrictTierEditor.jsx
+++ b/src/pages/subscription/components/DistrictTierEditor.jsx
@@ -62,7 +62,10 @@ export default function DistrictTierEditor({ value, onChange }) {
         e.dataTransfer.dropEffect = "move";
         if (dragOver !== key) setDragOver(key);
     };
-    const onDragLeave = () => setDragOver(null);
+    const onDragLeave = (e) => {
+        if (e.currentTarget.contains(e.relatedTarget)) return;
+        setDragOver(null);
+    };
     const onDrop = (e, targetTier /* null = 미할당 */) => {
         e.preventDefault();
         const district = e.dataTransfer.getData("text/district");