fix: playlist shelf still gets hidden sometimes

app/src/main/java/app/revanced/integrations/patches/components/SuggestionsShelfFilter.java

@@ -18,6 +18,10 @@ public class SuggestionsShelfFilter extends Filter {
             SettingsEnum.SPOOF_APP_VERSION.getBoolean()
                     && SettingsEnum.SPOOF_APP_VERSION_TARGET.getString().compareTo("17.08.35") <= 0;
 
+    // Must be volatile or synchronized, as litho filtering runs off main thread and this field is then access from the main thread.
+    public static volatile boolean isLibraryRecentShelfVisible;
+    public static volatile boolean isHomeFeedVisible;
+
     public SuggestionsShelfFilter() {
         pathFilterGroupList.addAll(
                 new StringFilterGroup(
@@ -31,11 +35,15 @@ public SuggestionsShelfFilter() {
     boolean isFiltered(@Nullable String identifier, String path, byte[] protobufBufferArray,
                        FilterGroupList matchedList, FilterGroup matchedGroup, int matchedIndex) {
         // Only one filter is added, so the matched group must be the horizontal video shelf.
-        if (path.contains("library_recent_shelf"))
+        if (path.contains("library_recent_shelf")) {
             // If the library shelf is detected, set the current navbar index to 4
             NavBarIndexHook.setCurrentNavBarIndex(4);
-
-        else if (NavBarIndexHook.isNotLibraryTab())
+            isLibraryRecentShelfVisible = true;
+        } else if (path.contains("more_drawer")) {
+            // If drawer button is detected, set the current NavBar index to zero
+            NavBarIndexHook.setCurrentNavBarIndex(0);
+            isHomeFeedVisible = true;
+        } else if (NavBarIndexHook.isNotLibraryTab())
             // When the Library Tab is not detected, hide the suggestion shelf
             return super.isFiltered(path, identifier, protobufBufferArray, matchedList, matchedGroup, matchedIndex);
 
@@ -44,7 +52,7 @@ else if (NavBarIndexHook.isNotLibraryTab())
 
     /**
      * Injection point.
-     *
+     * <p>
      * Only used to hide breaking news on tablet layout which still uses the old UI components.
      */
     public static void hideBreakingNews(View view) {

app/src/main/java/app/revanced/integrations/utils/NavBarIndexHook.java

@@ -2,6 +2,8 @@
 
 import android.content.Context;
 
+import app.revanced.integrations.patches.components.SuggestionsShelfFilter;
+
 public class NavBarIndexHook {
 
     private static int currentNavBarIndex = 0;
@@ -20,6 +22,16 @@ public static void setCurrentNavBarIndex(int navBarIndex) {
     }
 
     public static void setLastNavBarIndex() {
+        // if we come to back to Library fragment from any other like downloads page, playlists, your videos, or your clips
+        // NavBar index should still be same
+        if (SuggestionsShelfFilter.isLibraryRecentShelfVisible && currentNavBarIndex == 4)
+            return;
+
+        // if we come to back to Home fragment from any other like trending, or news, or sports page
+        // NavBar index should still be same
+        if (SuggestionsShelfFilter.isHomeFeedVisible && currentNavBarIndex == 0)
+            return;
+
         currentNavBarIndex = lastNavBarIndex;
     }