diff --git a/app/src/assets/scss/pdf/_pdf.scss b/app/src/assets/scss/pdf/_pdf.scss
index bc7e54e32..e29c7b393 100644
--- a/app/src/assets/scss/pdf/_pdf.scss
+++ b/app/src/assets/scss/pdf/_pdf.scss
@@ -38,7 +38,7 @@
   }
 
   &__util {
-    z-index: 4;
+    z-index: 9999; // https://github.com/siyuan-note/siyuan/issues/13928
     padding: 8px;
 
     &--hide .pdf__util__hide {