-Modified selected play queue item to highlight entire item instead of text.

-Added selected item bullet.
-Modified play queue panel darker on main video player.
-Fixed color issue on play queue panel on light-themed main video player.
-Fixed hold-to-enqueue tooltip flashing when clicked on earlier sdk versions.
-Fixed queue item removal causing metadata for currently playing to refresh.

app/src/main/java/org/schabi/newpipe/fragments/detail/VideoDetailFragment.java

@@ -483,9 +483,12 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
                 if (!PreferenceManager.getDefaultSharedPreferences(activity).getBoolean(getString(R.string.show_hold_to_append_key), true)) return false;
 
                 if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
-                    appendControlsDetail.setVisibility(View.VISIBLE);
-                } else {
-                    appendControlsDetail.setVisibility(View.GONE);
+                    animateView(appendControlsDetail, true, 250, 0, new Runnable() {
+                        @Override
+                        public void run() {
+                            animateView(appendControlsDetail, false, 1500, 1000);
+                        }
+                    });
                 }
                 return false;
             }

app/src/main/java/org/schabi/newpipe/player/playback/MediaSourceManager.java

@@ -178,7 +178,8 @@ public class MediaSourceManager {
             case REMOVE:
                 final RemoveEvent removeEvent = (RemoveEvent) event;
                 remove(removeEvent.getRemoveIndex());
-                sync();
+                // Sync only when the currently playing is removed
+                if (removeEvent.getQueueIndex() == removeEvent.getRemoveIndex()) sync();
                 break;
             case MOVE:
                 final MoveEvent moveEvent = (MoveEvent) event;

app/src/main/java/org/schabi/newpipe/playlist/PlayQueueAdapter.java

@@ -188,10 +188,15 @@ public class PlayQueueAdapter extends RecyclerView.Adapter<RecyclerView.ViewHold
     @Override
     public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
         if(holder instanceof PlayQueueItemHolder) {
+            final PlayQueueItemHolder itemHolder = (PlayQueueItemHolder) holder;
+
             // Build the list item
-            playQueueItemBuilder.buildStreamInfoItem((PlayQueueItemHolder) holder, playQueue.getStreams().get(position));
+            playQueueItemBuilder.buildStreamInfoItem(itemHolder, playQueue.getStreams().get(position));
+
             // Check if the current item should be selected/highlighted
-            holder.itemView.setSelected(playQueue.getIndex() == position);
+            final boolean isSelected = playQueue.getIndex() == position;
+            itemHolder.itemSelected.setVisibility(isSelected ? View.VISIBLE : View.INVISIBLE);
+            itemHolder.itemView.setSelected(isSelected);
         } else if(holder instanceof HFHolder && position == playQueue.getStreams().size() && footer != null && showFooter) {
             ((HFHolder) holder).view = footer;
         }

app/src/main/java/org/schabi/newpipe/playlist/PlayQueueItemHolder.java

@@ -32,7 +32,7 @@ import org.schabi.newpipe.info_list.holder.InfoItemHolder;
 public class PlayQueueItemHolder extends RecyclerView.ViewHolder {
 
     public final TextView itemVideoTitleView, itemDurationView, itemAdditionalDetailsView;
-    public final ImageView itemThumbnailView, itemHandle;
+    public final ImageView itemSelected, itemThumbnailView, itemHandle;
 
     public final View itemRoot;
 
@@ -42,6 +42,7 @@ public class PlayQueueItemHolder extends RecyclerView.ViewHolder {
         itemVideoTitleView = v.findViewById(R.id.itemVideoTitleView);
         itemDurationView = v.findViewById(R.id.itemDurationView);
         itemAdditionalDetailsView = v.findViewById(R.id.itemAdditionalDetails);
+        itemSelected = v.findViewById(R.id.itemSelected);
         itemThumbnailView = v.findViewById(R.id.itemThumbnailView);
         itemHandle = v.findViewById(R.id.itemHandle);
     }