From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Sun, 28 Jul 2019 00:51:11 +0100
Subject: [PATCH] Mark entities as being ticked when notifying navigation
1.17: Check how this is done after rework

diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 7a09bc921827958f58290bd3d6f19984bb34a8f6..a811ced17721b70bb51837f47e466c2261db2466 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -1469,6 +1469,7 @@ public class ServerLevel extends net.minecraft.world.level.Level implements Worl
         VoxelShape voxelshape1 = newState.getCollisionShape(this, pos);
 
         if (Shapes.joinIsNotEmpty(voxelshape, voxelshape1, BooleanOp.NOT_SAME)) {
+            boolean wasTicking = this.tickingEntities; this.tickingEntities = true; // Paper
             Iterator iterator = this.navigations.iterator();
 
             while (iterator.hasNext()) {
@@ -1490,6 +1491,7 @@ public class ServerLevel extends net.minecraft.world.level.Level implements Worl
                 }
             }
 
+            this.tickingEntities = wasTicking; // Paper
         }
     }