diff --git a/packages/opencode/src/cli/cmd/tui/routes/session/index.tsx b/packages/opencode/src/cli/cmd/tui/routes/session/index.tsx
index d43edd2dd5d7..7262a9d3c316 100644
--- a/packages/opencode/src/cli/cmd/tui/routes/session/index.tsx
+++ b/packages/opencode/src/cli/cmd/tui/routes/session/index.tsx
@@ -1055,8 +1055,8 @@ export function Session() {
         tui: tuiConfig,
       }}
     >
-      <box flexDirection="row">
-        <box flexGrow={1} paddingBottom={1} paddingLeft={2} paddingRight={2} gap={1}>
+      <box flexDirection="row" height="100%" minHeight={0}>
+        <box flexGrow={1} minHeight={0} paddingLeft={2} paddingRight={2} gap={1}>
           <Show when={session()}>
             <scrollbox
               ref={(r) => (scroll = r)}
diff --git a/packages/opencode/src/cli/cmd/tui/routes/session/sidebar.tsx b/packages/opencode/src/cli/cmd/tui/routes/session/sidebar.tsx
index 7adc4c1db149..54d9fd97c294 100644
--- a/packages/opencode/src/cli/cmd/tui/routes/session/sidebar.tsx
+++ b/packages/opencode/src/cli/cmd/tui/routes/session/sidebar.tsx
@@ -35,7 +35,6 @@ export function Sidebar(props: { sessionID: string; overlay?: boolean }) {
         width={42}
         height="100%"
         paddingTop={1}
-        paddingBottom={1}
         paddingLeft={2}
         paddingRight={2}
         position={props.overlay ? "absolute" : "relative"}