1

frontend/src/pages/Workflow/Definition/Design/index.less

@@ -30,20 +30,23 @@
         display: flex;
         padding: 16px;
         gap: 16px;
+        overflow: hidden; // 防止外层出现滚动条
 
         .sidebar {
             width: 280px;
             flex-shrink: 0;
-            border-right: 1px solid #f0f0f0;
-            overflow-y: auto;
-            background: #fff;
             border-radius: 4px;
             box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
+            display: flex;
+            flex-direction: column;
+            overflow: hidden; // 防止sidebar本身出现滚动条
 
             :global {
                 .ant-collapse {
                     border: none;
                     background: transparent;
+                    flex: 1;
+                    overflow-y: auto; // 只在折叠面板内部显示滚动条
 
                     .ant-collapse-item {
                         border-radius: 0;