diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorSkin.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorSkin.java
index e782b8576..4cc551613 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorSkin.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorSkin.java
@@ -178,8 +178,8 @@ public class DecoratorSkin extends SkinBase<Decorator> {
                     navBarPane.getChildren().setAll(node);
                 }
 
+                leftPane.prefWidthProperty().unbind();
                 if (s.getLeftPaneWidth() >= 0) {
-                    leftPane.prefWidthProperty().unbind();
                     FXUtils.playAnimation(leftPane, "animation",
                             s.isAnimate() ? Duration.millis(160) : null, leftPane.prefWidthProperty(), null, s.getLeftPaneWidth(), FXUtils.SINE);
                 } else {
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/BMCLAPIDownloadProvider.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/BMCLAPIDownloadProvider.java
index 2b98fa01f..5cda0983d 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/BMCLAPIDownloadProvider.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/BMCLAPIDownloadProvider.java
@@ -17,6 +17,7 @@
  */
 package org.jackhuang.hmcl.download;
 
+import org.jackhuang.hmcl.download.fabric.FabricAPIVersionList;
 import org.jackhuang.hmcl.download.fabric.FabricVersionList;
 import org.jackhuang.hmcl.download.forge.ForgeBMCLVersionList;
 import org.jackhuang.hmcl.download.game.GameVersionList;
@@ -31,6 +32,7 @@ public class BMCLAPIDownloadProvider implements DownloadProvider {
     private final String apiRoot;
     private final GameVersionList game;
     private final FabricVersionList fabric;
+    private final FabricAPIVersionList fabricApi;
     private final ForgeBMCLVersionList forge;
     private final LiteLoaderBMCLVersionList liteLoader;
     private final OptiFineBMCLVersionList optifine;
@@ -39,6 +41,7 @@ public class BMCLAPIDownloadProvider implements DownloadProvider {
         this.apiRoot = apiRoot;
         this.game = new GameVersionList(this);
         this.fabric = new FabricVersionList(this);
+        this.fabricApi = new FabricAPIVersionList(this);
         this.forge = new ForgeBMCLVersionList(apiRoot);
         this.liteLoader = new LiteLoaderBMCLVersionList(this);
         this.optifine = new OptiFineBMCLVersionList(apiRoot);
@@ -65,6 +68,8 @@ public class BMCLAPIDownloadProvider implements DownloadProvider {
                 return game;
             case "fabric":
                 return fabric;
+            case "fabric-api":
+                return fabricApi;
             case "forge":
                 return forge;
             case "liteloader":