diff --git a/app/src/assets/scss/business/_layout.scss b/app/src/assets/scss/business/_layout.scss
index 3ca5f4737..9d68ab0ef 100644
--- a/app/src/assets/scss/business/_layout.scss
+++ b/app/src/assets/scss/business/_layout.scss
@@ -109,7 +109,7 @@
     height: 6px;
     width: 100%;
     position: relative;
-    z-index: 2;
+    z-index: 4; // 需大于 #sidebarContainer https://github.com/siyuan-note/siyuan/issues/11759
 
     &:hover:after {
       background-color: var(--b3-scroll-color);