Merge pull request #5574 from Textualize/fix-ol-render-line

Fix ol render line

Author: willmcgugan

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Fixed
 
 - Fixed `Link` binding to open the link https://github.com/Textualize/textual/issues/5564
+- Fixed IndexError in OptionList https://github.com/Textualize/textual/pull/5574
 - Fixed issue with clear_panes breaking tabbed content https://github.com/Textualize/textual/pull/5573
 
 ## [2.1.0] - 2025-02-19

src/textual/widgets/_option_list.py

@@ -853,7 +853,10 @@ def render_line(self, y: int) -> Strip:
             style = self.get_visual_style("option-list--option")
 
         strips = self._get_option_render(option, style)
-        strip = strips[line_offset]
+        try:
+            strip = strips[line_offset]
+        except IndexError:
+            return Strip.blank(self.scrollable_content_region.width)
         return strip
 
     def validate_highlighted(self, highlighted: int | None) -> int | None: