diff --git a/resources/assets/js/pages/single/fileMsg.vue b/resources/assets/js/pages/single/fileMsg.vue
index 2c1bc58f3..a3619ab4e 100644
--- a/resources/assets/js/pages/single/fileMsg.vue
+++ b/resources/assets/js/pages/single/fileMsg.vue
@@ -38,6 +38,9 @@
         outline: 0;
         padding: 0;
     }
+    .markdown-preview-warp {
+        overflow: auto;
+    }
     .preview-iframe {
         background: 0 0;
         float: none;
diff --git a/resources/assets/js/pages/single/fileTask.vue b/resources/assets/js/pages/single/fileTask.vue
index 1e03ab106..a3212833c 100644
--- a/resources/assets/js/pages/single/fileTask.vue
+++ b/resources/assets/js/pages/single/fileTask.vue
@@ -34,6 +34,9 @@
         outline: 0;
         padding: 0;
     }
+    .markdown-preview-warp {
+        overflow: auto;
+    }
     .preview-iframe {
         background: 0 0;
         float: none;