Ignore long strip taps confirmed after the reader is gone

(cherry picked from commit c371d6331d)

CHANGELOG.md

@@ -21,6 +21,7 @@ The format is a modified version of [Keep a Changelog](https://keepachangelog.co
 - Fixed the paged reader crashing when moving to another chapter after a wide page of a neighbouring chapter was split ([@AntsyLich](https://github.com/AntsyLich))
 - Fixed a crash when opening the filters of a source with an invalid filter ([@AntsyLich](https://github.com/AntsyLich))
 - Fixed a crash when installing an extension on a device where the system installer can't ask for confirmation ([@AntsyLich](https://github.com/AntsyLich))
+- Fixed a crash when tapping in the long strip reader as it closed ([@AntsyLich](https://github.com/AntsyLich))
 
 ## [v0.21.1] - 2026-10-12
 ### Fixed

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonRecyclerView.kt

@@ -243,7 +243,9 @@ class WebtoonRecyclerView @JvmOverloads constructor(
     inner class GestureListener : GestureDetectorWithLongTap.Listener() {
 
         override fun onSingleTapConfirmed(ev: MotionEvent): Boolean {
-            if (!tapDuringManualScroll) {
+            // A tap is confirmed after a delay, by when the reader can be gone, and scrolling a detached list
+            // lays out pages that can't compose
+            if (!tapDuringManualScroll && isAttachedToWindow) {
                 tapListener?.invoke(ev)
             }
             return false