Index: arms/js/analysisTime.js
===================================================================
diff -u -rc9b0513c5c638d1c86eef1aa75b66a18e75142fe -r2fbdcad35850ec496ad12876a280d3a46a40f4c5
--- arms/js/analysisTime.js	(.../analysisTime.js)	(revision c9b0513c5c638d1c86eef1aa75b66a18e75142fe)
+++ arms/js/analysisTime.js	(.../analysisTime.js)	(revision 2fbdcad35850ec496ad12876a280d3a46a40f4c5)
@@ -1689,8 +1689,11 @@
 					date: formatDateTime(item.updated)
 				};
 			} else {
-				contentSet[item.summary].issuekey.push(item.key);
-				contentSet[item.summary].issuekey.sort();
+				// issuekey에 item.key가 없는 경우에만 추가
+				if (!contentSet[item.summary].issuekey.includes(item.key)) {
+					contentSet[item.summary].issuekey.push(item.key);
+					contentSet[item.summary].issuekey.sort();
+				}
 			}
 		});
 
@@ -1703,7 +1706,7 @@
 	}));
 
 	// 날짜를 기준으로 오름차순 정렬
-	items.sort((a, b) => new Date(a.date) - new Date(b.date));
+	items.sort((a, b) => new Date(b.date) - new Date(a.date));
 
 	makeVerticalTimeline(items);