Fix library options menu shown in chapters screen. Resolves #1096

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

@@ -126,6 +126,7 @@ class LibraryController(
 
     init {
         setHasOptionsMenu(true)
+        retainViewMode = RetainViewMode.RETAIN_DETACH
     }
 
     override fun getTitle(): String? {
@@ -425,7 +426,7 @@ class LibraryController(
         presenter.onOpenManga()
 
         router.pushController(RouterTransaction.with(MangaController(manga))
-                .pushChangeHandler(FadeChangeHandler(false))
+                .pushChangeHandler(FadeChangeHandler())
                 .popChangeHandler(FadeChangeHandler()))
     }
 

app/src/main/res/layout/manga_controller.xml

@@ -3,5 +3,4 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/view_pager"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:background="?android:attr/colorBackground" />
+    android:layout_height="match_parent" />