fix arrangement cache (#2249)

* fix arrangement cache

* changelog

Author: willmcgugan

CHANGELOG.md

@@ -5,11 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
-## Unreleased
+## [0.19.1] - 2023-04-10
 
 ### Fixed
 
 - Fix viewport units using wrong viewport size  https://github.com/Textualize/textual/pull/2247
+- Fixed layout not clearing arrangement cache https://github.com/Textualize/textual/pull/2249
 
 
 ## [0.19.0] - 2023-04-07
@@ -739,6 +740,8 @@ https://textual.textualize.io/blog/2022/11/08/version-040/#version-040
 - New handler system for messages that doesn't require inheritance
 - Improved traceback handling
 
+[0.19.1]: https://github.com/Textualize/textual/compare/v0.19.0...v0.19.1
+[0.19.0]: https://github.com/Textualize/textual/compare/v0.18.0...v0.19.0
 [0.18.0]: https://github.com/Textualize/textual/compare/v0.17.4...v0.18.0
 [0.17.3]: https://github.com/Textualize/textual/compare/v0.17.2...v0.17.3
 [0.17.2]: https://github.com/Textualize/textual/compare/v0.17.1...v0.17.2

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "textual"
-version = "0.19.0"
+version = "0.19.1"
 homepage = "https://github.com/Textualize/textual"
 description = "Modern Text User Interface framework"
 authors = ["Will McGugan <[email protected]>"]

src/textual/widget.py

@@ -2795,7 +2795,7 @@ def refresh(
         Returns:
             The `Widget` instance.
         """
-        if layout and not self._layout_required:
+        if layout:
             self._layout_required = True
             self._stabilize_scrollbar = None
             for ancestor in self.ancestors: