From c7de9379ad5ddbb9c3739e3a14f88b280061f482 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alexander=20S=C3=B6derberg?= <sauilitired@gmail.com>
Date: Mon, 24 Feb 2020 11:47:52 +0100
Subject: [PATCH] Prevent liquids from flowing out of block walls. Fixes #2598.

---
 .../plotsquared/bukkit/listeners/PlayerEvents.java         | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/listeners/PlayerEvents.java b/Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/listeners/PlayerEvents.java
index 66977d308..1c76668f0 100644
--- a/Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/listeners/PlayerEvents.java
+++ b/Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/listeners/PlayerEvents.java
@@ -1432,6 +1432,13 @@ import java.util.regex.Pattern;
         } else if (!area.contains(fLocation.getX(), fLocation.getZ()) || !Objects
             .equals(null, area.getOwnedPlot(fLocation))) {
             event.setCancelled(true);
+        } else if (event.getBlock().isLiquid()) {
+            final org.bukkit.Location location = event.getBlock().getLocation();
+            if (BukkitUtil.getPlot(location.clone().add(0, 0, 1)) != null ||
+                BukkitUtil.getPlot(location.clone().add(1, 0, 0)) != null ||
+                BukkitUtil.getPlot(location.clone().add(1, 0, 1)) != null) {
+                event.setCancelled(true);
+            }
         }
     }