diff --git a/webapp/sass/layout/_post.scss b/webapp/sass/layout/_post.scss
index e3970b0e6c1..1857462e680 100644
--- a/webapp/sass/layout/_post.scss
+++ b/webapp/sass/layout/_post.scss
@@ -415,6 +415,10 @@
         &.custom-textarea--emoji-picker {
             padding-right: 60px;
         }
+
+        &.textbox-preview-area {
+          overflow-y: auto;
+        }
     }
 
     .emoji-picker {