diff --git a/sandbox/auto_test.py b/sandbox/auto_test.py
index c592a8155..594985a89 100644
--- a/sandbox/auto_test.py
+++ b/sandbox/auto_test.py
@@ -4,7 +4,7 @@ from textual.layout import Vertical
 
 from rich.text import Text
 
-TEXT = Text.from_markup(" ".join(str(n) * 5 for n in range(10)))
+TEXT = Text.from_markup(" ".join(str(n) * 5 for n in range(12)))
 
 
 class AutoApp(App):
diff --git a/src/textual/_border.py b/src/textual/_border.py
index 56dfa1277..139aca33f 100644
--- a/src/textual/_border.py
+++ b/src/textual/_border.py
@@ -211,7 +211,6 @@ class Border:
                     render_options = options.update_dimensions(width, new_height)
                 else:
                     render_options = options.update_width(width)
-                    # has_top = has_bottom = False
 
         lines = console.render_lines(self.renderable, render_options)
 
diff --git a/src/textual/_layout.py b/src/textual/_layout.py
index d8930dbe9..3f629d1e6 100644
--- a/src/textual/_layout.py
+++ b/src/textual/_layout.py
@@ -48,6 +48,16 @@ class Layout(ABC):
         """
 
     def get_content_width(self, widget: Widget, container: Size, viewport: Size) -> int:
+        """Get the width of the content.
+
+        Args:
+            widget (Widget): The container widget.
+            container (Size): The container size.
+            viewport (Size): The viewport size.
+
+        Returns:
+            int: Width of the content.
+        """
         width: int | None = None
         for child in widget.displayed_children:
             assert isinstance(child, Widget)
@@ -61,6 +71,17 @@ class Layout(ABC):
     def get_content_height(
         self, widget: Widget, container: Size, viewport: Size, width: int
     ) -> int:
+        """Get the content height.
+
+        Args:
+            widget (Widget): The container widget.
+            container (Size): The container size.
+            viewport (Size): The viewport.
+            width (int): The content width.
+
+        Returns:
+            int: Content height (in lines).
+        """
         if not widget.displayed_children:
             height = container.height
         else:
diff --git a/src/textual/app.py b/src/textual/app.py
index 67b43db0f..e25447365 100644
--- a/src/textual/app.py
+++ b/src/textual/app.py
@@ -408,8 +408,8 @@ class App(Generic[ReturnType], DOMNode):
                     self.devtools.log(
                         DevtoolsLog(output, caller=_textual_calling_frame)
                     )
-        except Exception:
-            self.console.bell()
+        except Exception as error:
+            self.on_exception(error)
 
     def action_screenshot(self, path: str | None = None) -> None:
         """Action to save a screenshot."""