diff --git a/ui/src/styles/chat/board.css b/ui/src/styles/chat/board.css
index ede83452a5c..ce499014e8e 100644
--- a/ui/src/styles/chat/board.css
+++ b/ui/src/styles/chat/board.css
@@ -75,12 +75,22 @@
   overflow: hidden;
 }
 
+/* Scroll owner for the board face. Widget/tab menus stay usable because
+   wa-popup renders them in the top layer, so this overflow cannot clip them.
+   Inline padding lives on .board-view below: macOS overlay scrollbars render
+   inside the scroll container's padding and would float away from the edge. */
 .board-session-surface__board > openclaw-board-view {
   display: block;
   flex: 1 1 0;
   min-width: 0;
   min-height: 0;
-  padding: 12px 16px 16px;
+  overflow-x: hidden;
+  overflow-y: auto;
+  padding: 12px 0 16px;
+}
+
+.board-session-surface__board .board-view {
+  padding-inline: 16px;
 }
 
 .board-session-surface__chat {