craftbukkit/nms-patches/net/minecraft/world/level/redstone/NeighborUpdater.patch

--- a/net/minecraft/world/level/redstone/NeighborUpdater.java
+++ b/net/minecraft/world/level/redstone/NeighborUpdater.java
@@ -13,6 +13,13 @@
 import net.minecraft.world.level.block.Block;
 import net.minecraft.world.level.block.Blocks;
 import net.minecraft.world.level.block.state.IBlockData;
+// CraftBukkit start
+import net.minecraft.server.level.WorldServer;
+import org.bukkit.craftbukkit.CraftWorld;
+import org.bukkit.craftbukkit.block.CraftBlock;
+import org.bukkit.craftbukkit.block.data.CraftBlockData;
+import org.bukkit.event.block.BlockPhysicsEvent;
+// CraftBukkit end
 
 public interface NeighborUpdater {
 
@@ -50,6 +57,17 @@
 
     static void executeUpdate(World world, IBlockData iblockdata, BlockPosition blockposition, Block block, @Nullable Orientation orientation, boolean flag) {
         try {
+            // CraftBukkit start
+            CraftWorld cworld = ((WorldServer) world).getWorld();
+            if (cworld != null) {
+                BlockPhysicsEvent event = new BlockPhysicsEvent(CraftBlock.at(world, blockposition), CraftBlockData.fromData(iblockdata));
+                ((WorldServer) world).getCraftServer().getPluginManager().callEvent(event);
+
+                if (event.isCancelled()) {
+                    return;
+                }
+            }
+            // CraftBukkit end
             iblockdata.handleNeighborChanged(world, blockposition, block, orientation, flag);
         } catch (Throwable throwable) {
             CrashReport crashreport = CrashReport.forThrowable(throwable, "Exception while updating neighbours");