diff --git a/spine-csharp/src/AnimationState.cs b/spine-csharp/src/AnimationState.cs
index 9f310a0b8..2adf50a93 100644
--- a/spine-csharp/src/AnimationState.cs
+++ b/spine-csharp/src/AnimationState.cs
@@ -694,8 +694,12 @@ namespace Spine {
 			return SetAnimation(trackIndex, animation, loop);
 		}
 
-		/// <summary>Sets the current animation for a track, discarding any queued animations. If the formerly current track entry was never
-		/// applied to a skeleton, it is replaced (not mixed from).</summary>
+		/// <summary><para>
+		/// Sets the current animation for a track, discarding any queued animations.</para>
+		/// <para>
+		/// If the formerly current track entry is for the same animation and was never applied to a skeleton, it is replaced (not mixed
+		/// from).
+		/// </para></summary>
 		/// <param name="loop">If true, the animation will repeat. If false it will not, instead its last frame is applied if played beyond its
 		///          duration. In either case<see cref="TrackEntry.TrackEnd"/> determines when the track is cleared.</param>
 		/// <returns> A track entry to allow further customization of animation playback. References to the track entry must not be kept
@@ -705,7 +709,7 @@ namespace Spine {
 			bool interrupt = true;
 			TrackEntry current = ExpandToIndex(trackIndex);
 			if (current != null) {
-				if (current.nextTrackLast == -1) {
+				if (current.nextTrackLast == -1 && current.animation == animation) {
 					// Don't mix from an entry that was never applied.
 					tracks.Items[trackIndex] = current.mixingFrom;
 					queue.Interrupt(current);
diff --git a/spine-csharp/src/package.json b/spine-csharp/src/package.json
index dfc126b16..bb824c165 100644
--- a/spine-csharp/src/package.json
+++ b/spine-csharp/src/package.json
@@ -2,7 +2,7 @@
 	"name": "com.esotericsoftware.spine.spine-csharp",
 	"displayName": "spine-csharp Runtime",
 	"description": "This plugin provides the spine-csharp core runtime. Compatible with skeleton exports from Spine Editor version 4.3.40-beta or later.",
-	"version": "4.3.16",
+	"version": "4.3.17",
 	"unity": "2018.3",
 	"author": {
 		"name": "Esoteric Software",
diff --git a/spine-csharp/tests/package.json b/spine-csharp/tests/package.json
index fae5b84d7..1b2942192 100644
--- a/spine-csharp/tests/package.json
+++ b/spine-csharp/tests/package.json
@@ -2,7 +2,7 @@
 	"name": "com.esotericsoftware.spine.spine-csharp-tests",
 	"displayName": "spine-csharp Runtime Tests",
 	"description": "This plugin provides tests for the spine-csharp core runtime.",
-	"version": "4.3.0",
+	"version": "4.3.1",
 	"unity": "2018.3",
 	"author": {
 		"name": "Esoteric Software",
diff --git a/spine-csharp/tests/src/AnimationStateTests.cs b/spine-csharp/tests/src/AnimationStateTests.cs
index 5321d5414..a9e912936 100644
--- a/spine-csharp/tests/src/AnimationStateTests.cs
+++ b/spine-csharp/tests/src/AnimationStateTests.cs
@@ -602,11 +602,13 @@ namespace Spine {
 			Setup("setAnimation twice", // 21
 				Expect(0, "start", 0, 0), //
 				Expect(0, "interrupt", 0, 0), //
-				Expect(0, "end", 0, 0), //
-				Expect(0, "dispose", 0, 0), //
 
 				Expect(1, "start", 0, 0), //
 				Expect(1, "event 0", 0, 0), //
+
+				Expect(0, "end", 0, 0.1f), //
+				Expect(0, "dispose", 0, 0.1f), //
+
 				Expect(1, "event 14", 0.5f, 0.5f), //
 
 				Note("First 2 setAnimation calls are done."),
@@ -615,8 +617,6 @@ namespace Spine {
 
 				Expect(0, "start", 0, 0.8f), //
 				Expect(0, "interrupt", 0, 0.8f), //
-				Expect(0, "end", 0, 0.8f), //
-				Expect(0, "dispose", 0, 0.8f), //
 
 				Expect(2, "start", 0, 0.8f), //
 				Expect(2, "event 0", 0.1f, 0.9f), //
@@ -624,18 +624,21 @@ namespace Spine {
 				Expect(1, "end", 0.9f, 1), //
 				Expect(1, "dispose", 0.9f, 1), //
 
+				Expect(0, "end", 0.1f, 1), //
+				Expect(0, "dispose", 0.1f, 1), //
+
 				Expect(2, "event 14", 0.5f, 1.3f), //
 				Expect(2, "event 30", 1, 1.8f), //
 				Expect(2, "complete", 1, 1.8f), //
 				Expect(2, "end", 1, 1.9f), //
 				Expect(2, "dispose", 1, 1.9f) //
 			);
-			state.SetAnimation(0, "events0", false); // First should be ignored.
+			state.SetAnimation(0, "events0", false); // Kept as mixingFrom (not discarded, different animation).
 			state.SetAnimation(0, "events1", false);
 			Run(0.1f, 1000, new TestListener(
 				(time) => {
 					if (IsEqual(time, 0.8f)) {
-						state.SetAnimation(0, "events0", false); // First should be ignored.
+						state.SetAnimation(0, "events0", false); // Kept as mixingFrom (not discarded, different animation).
 						state.SetAnimation(0, "events2", false).TrackEnd = 1;
 					}
 				}));
@@ -643,8 +646,6 @@ namespace Spine {
 			Setup("setAnimation twice with multiple mixing", // 22
 				Expect(0, "start", 0, 0), //
 				Expect(0, "interrupt", 0, 0), //
-				Expect(0, "end", 0, 0), //
-				Expect(0, "dispose", 0, 0), //
 
 				Expect(1, "start", 0, 0), //
 				Expect(1, "event 0", 0, 0), //
@@ -655,8 +656,6 @@ namespace Spine {
 
 				Expect(0, "start", 0, 0.2f), //
 				Expect(0, "interrupt", 0, 0.2f), //
-				Expect(0, "end", 0, 0.2f), //
-				Expect(0, "dispose", 0, 0.2f), //
 
 				Expect(2, "start", 0, 0.2f), //
 				Expect(2, "event 0", 0.1f, 0.3f), //
@@ -667,36 +666,43 @@ namespace Spine {
 
 				Expect(1, "start", 0, 0.4f), //
 				Expect(1, "interrupt", 0, 0.4f), //
-				Expect(1, "end", 0, 0.4f), //
-				Expect(1, "dispose", 0, 0.4f), //
 
 				Expect(0, "start", 0, 0.4f), //
 				Expect(0, "event 0", 0.1f, 0.5f), //
 
+				Expect(0, "end", 0.6f, 0.7f), //
+				Expect(0, "dispose", 0.6f, 0.7f), //
+
 				Expect(1, "end", 0.8f, 0.9f), //
 				Expect(1, "dispose", 0.8f, 0.9f), //
 
+				Expect(0, "end", 0.6f, 0.9f), //
+				Expect(0, "dispose", 0.6f, 0.9f), //
+
 				Expect(0, "event 14", 0.5f, 0.9f), //
 
 				Expect(2, "end", 0.8f, 1.1f), //
 				Expect(2, "dispose", 0.8f, 1.1f), //
 
+				Expect(1, "end", 0.6f, 1.1f), //
+				Expect(1, "dispose", 0.6f, 1.1f), //
+
 				Expect(0, "event 30", 1, 1.4f), //
 				Expect(0, "complete", 1, 1.4f), //
 				Expect(0, "end", 1, 1.5f), //
 				Expect(0, "dispose", 1, 1.5f) //
 			);
 			stateData.DefaultMix = 0.6f;
-			state.SetAnimation(0, "events0", false); // First should be ignored.
+			state.SetAnimation(0, "events0", false); // Kept as mixingFrom (not discarded, different animation).
 			state.SetAnimation(0, "events1", false);
 			Run(0.1f, 1000, new TestListener(
 				(time) => {
 					if (IsEqual(time, 0.2f)) {
-						state.SetAnimation(0, "events0", false); // First should be ignored.
+						state.SetAnimation(0, "events0", false); // Kept as mixingFrom (not discarded, different animation).
 						state.SetAnimation(0, "events2", false);
 					}
 					if (IsEqual(time, 0.4f)) {
-						state.SetAnimation(0, "events1", false); // First should be ignored.
+						state.SetAnimation(0, "events1", false); // Kept as mixingFrom (not discarded, different animation).
 						state.SetAnimation(0, "events0", false).TrackEnd = 1;
 					}
 				}));