craftbukkit/nms-patches/net/minecraft/world/level/block/BlockDragonEgg.patch

--- a/net/minecraft/world/level/block/BlockDragonEgg.java
+++ b/net/minecraft/world/level/block/BlockDragonEgg.java
@@ -16,6 +16,8 @@
 import net.minecraft.world.phys.shapes.VoxelShape;
 import net.minecraft.world.phys.shapes.VoxelShapeCollision;
 
+import org.bukkit.event.block.BlockFromToEvent; // CraftBukkit
+
 public class BlockDragonEgg extends BlockFalling {
 
     public static final MapCodec<BlockDragonEgg> CODEC = simpleCodec(BlockDragonEgg::new);
@@ -53,6 +55,18 @@
             BlockPosition blockposition1 = blockposition.offset(world.random.nextInt(16) - world.random.nextInt(16), world.random.nextInt(8) - world.random.nextInt(8), world.random.nextInt(16) - world.random.nextInt(16));
 
             if (world.getBlockState(blockposition1).isAir() && worldborder.isWithinBounds(blockposition1)) {
+                // CraftBukkit start
+                org.bukkit.block.Block from = world.getWorld().getBlockAt(blockposition.getX(), blockposition.getY(), blockposition.getZ());
+                org.bukkit.block.Block to = world.getWorld().getBlockAt(blockposition1.getX(), blockposition1.getY(), blockposition1.getZ());
+                BlockFromToEvent event = new BlockFromToEvent(from, to);
+                org.bukkit.Bukkit.getPluginManager().callEvent(event);
+
+                if (event.isCancelled()) {
+                    return;
+                }
+
+                blockposition1 = new BlockPosition(event.getToBlock().getX(), event.getToBlock().getY(), event.getToBlock().getZ());
+                // CraftBukkit end
                 if (world.isClientSide) {
                     for (int j = 0; j < 128; ++j) {
                         double d0 = world.random.nextDouble();