fix excess scroll visible

src/textual/widget.py

@@ -1059,7 +1059,9 @@ class Widget(DOMNode):
 
         while isinstance(widget.parent, Widget) and widget is not self:
             container = widget.parent
-            scroll_offset = container.scroll_to_region(region, animate=animate)
+            scroll_offset = container.scroll_to_region(
+                region, spacing=widget.parent.gutter, animate=animate
+            )
             if scroll_offset:
                 scrolled = True
 
@@ -1096,6 +1098,10 @@ class Widget(DOMNode):
         window = self.content_region.at_offset(self.scroll_offset)
         if spacing is not None:
             window = window.shrink(spacing)
+
+        if window in region:
+            return Offset()
+
         delta_x, delta_y = Region.get_scroll_to_visible(window, region)
         scroll_x, scroll_y = self.scroll_offset
         delta = Offset(

src/textual/widgets/_data_table.py

@@ -557,7 +557,7 @@ class DataTable(ScrollView, Generic[CellType], can_focus=True):
 
     def _scroll_cursor_in_to_view(self, animate: bool = False) -> None:
         region = self._get_cell_region(self.cursor_row, self.cursor_column)
-        spacing = self._get_cell_border()
+        spacing = self._get_cell_border() + self.scrollbar_gutter
         self.scroll_to_region(region, animate=animate, spacing=spacing)
 
     def on_click(self, event: events.Click) -> None: