diff --git a/src/main/java/de/jottyfan/minecraft/block/QuicklyBlocks.java b/src/main/java/de/jottyfan/minecraft/block/QuicklyBlocks.java
index 041b862..bc6c286 100644
--- a/src/main/java/de/jottyfan/minecraft/block/QuicklyBlocks.java
+++ b/src/main/java/de/jottyfan/minecraft/block/QuicklyBlocks.java
@@ -60,6 +60,7 @@ public class QuicklyBlocks {
 
 	// TODO: add salpeter ore, sulfor ore
 	// TODO: merge lavahoarder and emptylavahoarder into one block using a BooleanProperty for the lava fill state
+	// TODO: repair block stacker bugs; transport seems to only use the max container size slot
 
 	public static final BlockEntityType<ItemHoarderBlockEntity> BLOCKENTITY_ITEMHOARDER = new BlockEntityRegister<ItemHoarderBlockEntity>()
 			.registerBlockEntity("itemhoarderblockentity", ItemHoarderBlockEntity::new, ITEMHOARDER);