Fix subtitle dialog show

app/src/leanback/java/com/fongmi/android/tv/ui/activity/CastActivity.java

@@ -412,7 +412,7 @@ public class CastActivity extends PlaybackActivity implements CustomKeyDownVod.L
     @Override
     public void onSubtitleClick() {
         SubtitleDialog.create().view(mBinding.exo.getSubtitleView()).show(this);
-        hideControl();
+        App.post(this::hideControl, 100);
     }
 
     @Override

app/src/leanback/java/com/fongmi/android/tv/ui/activity/LiveActivity.java

@@ -760,7 +760,7 @@ public class LiveActivity extends PlaybackActivity implements GroupAdapter.OnCli
     @Override
     public void onSubtitleClick() {
         SubtitleDialog.create().view(mBinding.exo.getSubtitleView()).show(this);
-        hideControl();
+        App.post(this::hideControl, 100);
     }
 
     @Override

app/src/leanback/java/com/fongmi/android/tv/ui/activity/VideoActivity.java

@@ -1118,7 +1118,7 @@ public class VideoActivity extends PlaybackActivity implements CustomKeyDownVod.
     @Override
     public void onSubtitleClick() {
         SubtitleDialog.create().view(mBinding.exo.getSubtitleView()).show(this);
-        hideControl();
+        App.post(this::hideControl, 100);
     }
 
     @Override