diff --git a/frontend/lib/registry/components/split-panel-layout/SplitPanelLayoutComponent.tsx b/frontend/lib/registry/components/split-panel-layout/SplitPanelLayoutComponent.tsx
index 809b9035..aaf3587d 100644
--- a/frontend/lib/registry/components/split-panel-layout/SplitPanelLayoutComponent.tsx
+++ b/frontend/lib/registry/components/split-panel-layout/SplitPanelLayoutComponent.tsx
@@ -289,29 +289,32 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
     if (!leftTableName || isDesignMode) return;
 
     const leftTableId = `split-panel-left-${component.id}`;
-    const leftColumns = componentConfig.leftPanel?.displayColumns || [];
+    // 화면에 표시되는 컬럼만 사용 (displayColumns)
+    const displayColumns = componentConfig.leftPanel?.displayColumns || [];
+    
+    // displayColumns가 없으면 등록하지 않음 (화면에 표시되는 컬럼만 설정 가능)
+    if (displayColumns.length === 0) return;
 
-    if (leftColumns.length > 0) {
-      registerTable({
-        tableId: leftTableId,
-        label: `${component.title || "분할 패널"} (좌측)`,
-        tableName: leftTableName,
-        columns: leftColumns.map((col: string) => ({
-          columnName: col,
-          columnLabel: leftColumnLabels[col] || col,
-          inputType: "text",
-          visible: true,
-          width: 150,
-          sortable: true,
-          filterable: true,
-        })),
-        onFilterChange: setLeftFilters,
-        onGroupChange: setLeftGrouping,
-        onColumnVisibilityChange: setLeftColumnVisibility,
-      });
+    // 테이블명이 있으면 등록
+    registerTable({
+      tableId: leftTableId,
+      label: `${component.title || "분할 패널"} (좌측)`,
+      tableName: leftTableName,
+      columns: displayColumns.map((col: string) => ({
+        columnName: col,
+        columnLabel: leftColumnLabels[col] || col,
+        inputType: "text",
+        visible: true,
+        width: 150,
+        sortable: true,
+        filterable: true,
+      })),
+      onFilterChange: setLeftFilters,
+      onGroupChange: setLeftGrouping,
+      onColumnVisibilityChange: setLeftColumnVisibility,
+    });
 
-      return () => unregisterTable(leftTableId);
-    }
+    return () => unregisterTable(leftTableId);
   }, [component.id, componentConfig.leftPanel?.tableName, componentConfig.leftPanel?.displayColumns, leftColumnLabels, component.title, isDesignMode]);
 
   // 우측 테이블은 검색 컴포넌트 등록 제외 (좌측 마스터 테이블만 검색 가능)
diff --git a/frontend/lib/registry/components/table-search-widget/TableSearchWidget.tsx b/frontend/lib/registry/components/table-search-widget/TableSearchWidget.tsx
index 2b37e2d6..34b3044c 100644
--- a/frontend/lib/registry/components/table-search-widget/TableSearchWidget.tsx
+++ b/frontend/lib/registry/components/table-search-widget/TableSearchWidget.tsx
@@ -76,7 +76,15 @@ export function TableSearchWidget({ component, screenId, onHeightChange }: Table
   useEffect(() => {
     const tables = Array.from(registeredTables.values());
     
+    console.log("🔍 [TableSearchWidget] 테이블 감지:", {
+      tablesCount: tables.length,
+      tableIds: tables.map(t => t.tableId),
+      selectedTableId,
+      autoSelectFirstTable,
+    });
+    
     if (autoSelectFirstTable && tables.length > 0 && !selectedTableId) {
+      console.log("✅ [TableSearchWidget] 첫 번째 테이블 자동 선택:", tables[0].tableId);
       setSelectedTableId(tables[0].tableId);
     }
   }, [registeredTables, selectedTableId, autoSelectFirstTable, setSelectedTableId]);