Fix broken back button in search

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

@@ -18,8 +18,10 @@ import eu.kanade.tachiyomi.util.plusAssign
 import eu.kanade.tachiyomi.util.toast
 import eu.kanade.tachiyomi.widget.AutofitRecyclerView
 import kotlinx.android.synthetic.main.library_category.view.*
+import rx.android.schedulers.AndroidSchedulers
 import rx.subscriptions.CompositeSubscription
 import uy.kohesive.injekt.injectLazy
+import java.util.concurrent.TimeUnit
 
 /**
  * Fragment containing the library manga for a certain category.
@@ -112,6 +114,8 @@ class LibraryCategoryView @JvmOverloads constructor(context: Context, attrs: Att
         subscriptions += controller.searchRelay
                 .doOnNext { adapter.searchText = it }
                 .skip(1)
+                .debounce(350, TimeUnit.MILLISECONDS)
+                .observeOn(AndroidSchedulers.mainThread())
                 .subscribe { adapter.performFilter() }
 
         subscriptions += controller.libraryMangaRelay

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

@@ -371,8 +371,6 @@ class LibraryController(
         searchViewSubscription = searchView.queryTextChanges()
                 // Ignore events if this controller isn't at the top
                 .filter { router.backstack.lastOrNull()?.controller() == this }
-                .debounce(350, TimeUnit.MILLISECONDS)
-                .observeOn(AndroidSchedulers.mainThread())
                 .subscribeUntilDestroy {
                     query = it.toString()
                     searchRelay.call(query)