diff --git a/spine-unity/Assets/Spine/Runtime/spine-unity/Mesh Generation/MeshGenerator.cs b/spine-unity/Assets/Spine/Runtime/spine-unity/Mesh Generation/MeshGenerator.cs
index cc4ffdba6..9f76c8368 100644
--- a/spine-unity/Assets/Spine/Runtime/spine-unity/Mesh Generation/MeshGenerator.cs	
+++ b/spine-unity/Assets/Spine/Runtime/spine-unity/Mesh Generation/MeshGenerator.cs	
@@ -603,7 +603,11 @@ namespace Spine.Unity {
 
 			for (int slotIndex = instruction.startSlot; slotIndex < instruction.endSlot; slotIndex++) {
 				Slot slot = drawOrderItems[slotIndex];
-				if (!slot.Bone.Active) {
+				if (!slot.Bone.Active
+#if SLOT_ALPHA_DISABLES_ATTACHMENT
+					|| slot.A == 0f
+#endif
+					) {
 					clipper.ClipEnd(slot);
 					continue;
 				}
diff --git a/spine-unity/Assets/Spine/package.json b/spine-unity/Assets/Spine/package.json
index da31cdc1e..7313f0f20 100644
--- a/spine-unity/Assets/Spine/package.json
+++ b/spine-unity/Assets/Spine/package.json
@@ -2,7 +2,7 @@
 	"name": "com.esotericsoftware.spine.spine-unity",
 	"displayName": "spine-unity Runtime",
 	"description": "This plugin provides the spine-unity runtime core.",
-	"version": "4.2.109",
+	"version": "4.2.110",
 	"unity": "2018.3",
 	"author": {
 		"name": "Esoteric Software",