ForgePatch/patches/minecraft/net/minecraft/block/TrapDoorBlock.java.patch

--- a/net/minecraft/block/TrapDoorBlock.java
+++ b/net/minecraft/block/TrapDoorBlock.java
@@ -147,4 +147,17 @@
 
       return super.func_196271_a(p_196271_1_, p_196271_2_, p_196271_3_, p_196271_4_, p_196271_5_, p_196271_6_);
    }
+
+   //Forge Start
+   @Override
+   public boolean isLadder(BlockState state, net.minecraft.world.IWorldReader world, BlockPos pos, net.minecraft.entity.LivingEntity entity) {
+      if (state.func_177229_b(field_176283_b)) {
+         BlockState down = world.func_180495_p(pos.func_177977_b());
+         if (down.func_177230_c() == net.minecraft.block.Blocks.field_150468_ap)
+            return down.func_177229_b(LadderBlock.field_176382_a) == state.func_177229_b(field_185512_D);
+      }
+      return false;
+   }
+   //Forge End
+
 }