Fixed drop down in title showing up unintended

app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryController.kt

@@ -502,7 +502,9 @@ class LibraryController(
             LibraryUpdateService.setListener(this)
             recycler_cover.isClickable = false
             recycler_cover.isFocusable = false
+            if (onRoot) {
                 activity?.dropdown?.visibleIf(!singleCategory)
+            }
         } else {
             closeTip()
             activity?.dropdown?.gone()
@@ -552,7 +554,9 @@ class LibraryController(
             recycler.itemAnimator = DefaultItemAnimator()
         }
         singleCategory = presenter.categories.size <= 1
+        if (onRoot) {
             activity?.dropdown?.visibleIf(!singleCategory)
+        }
         progress.gone()
         if (!freshStart) {
             justStarted = false
@@ -571,6 +575,7 @@ class LibraryController(
         adapter.isLongPressDragEnabled = canDrag()
         category_recycler.setCategories(presenter.categories)
         setActiveCategory()
+        if (onRoot) {
             activity?.toolbar?.setOnClickListener {
                 val recycler = recycler ?: return@setOnClickListener
                 if (singleCategory) {
@@ -580,6 +585,7 @@ class LibraryController(
                 }
             }
         }
+    }
 
     private fun showCategories(show: Boolean) {
         recycler_cover.isClickable = show