From 2e42a23a7ec3ac3b14c2b7643a172dd7c8ebac2a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Guilloux?= <glx22@users.noreply.github.com>
Date: Thu, 25 Jan 2024 23:18:26 +0100
Subject: [PATCH] Fix b38d3c2208: missing water regions invalidation when
 building locks (#11879)

(cherry picked from commit 09b66751cf4d9b1dbf5cd357062d5c464603963b)
---
 src/water_cmd.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/water_cmd.cpp b/src/water_cmd.cpp
index 00f99281f1..61f36493d5 100644
--- a/src/water_cmd.cpp
+++ b/src/water_cmd.cpp
@@ -383,6 +383,8 @@ static CommandCost DoBuildLock(TileIndex tile, DiagDirection dir, DoCommandFlag
 		MarkTileDirtyByTile(tile + delta);
 		MarkCanalsAndRiversAroundDirty(tile - delta);
 		MarkCanalsAndRiversAroundDirty(tile + delta);
+		InvalidateWaterRegion(tile - delta);
+		InvalidateWaterRegion(tile + delta);
 	}
 	cost.AddCost(_price[PR_BUILD_LOCK]);