PaperMC/paper-server/nms-patches/net/minecraft/world/level/block/RootedDirtBlock.patch

--- a/net/minecraft/world/level/block/RootedDirtBlock.java
+++ b/net/minecraft/world/level/block/RootedDirtBlock.java
@@ -26,6 +26,6 @@
 
     @Override
     public void performBonemeal(WorldServer worldserver, RandomSource randomsource, BlockPosition blockposition, IBlockData iblockdata) {
-        worldserver.setBlockAndUpdate(blockposition.below(), Blocks.HANGING_ROOTS.defaultBlockState());
+        org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockSpreadEvent(worldserver, blockposition, blockposition.below(), Blocks.HANGING_ROOTS.defaultBlockState()); // CraftBukkit
     }
 }