Fix page number not appearing when opening chapter (#1936)

CHANGELOG.md

@@ -17,6 +17,7 @@ The format is a modified version of [Keep a Changelog](https://keepachangelog.co
 ### Fixes
 - Fix Bangumi search results including novels ([@MajorTanya](https://github.com/MajorTanya)) ([#1885](https://github.com/mihonapp/mihon/pull/1885))
 - Fix next chapter button occasionally jumping to the last page of the current chapter ([@perokhe](https://github.com/perokhe)) ([#1920](https://github.com/mihonapp/mihon/pull/1920))
+  - Fix page number not appearing when opening chapter ([@perokhe](https://github.com/perokhe)) ([#1936](https://github.com/mihonapp/mihon/pull/1936))
 - Fix backup sharing from notifications not working when app is in background ([@JaymanR](https://github.com/JaymanR))([#1929](https://github.com/mihonapp/mihon/pull/1929))
 
 ## [v0.18.0] - 2025-03-20

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PagerViewer.kt

@@ -291,6 +291,8 @@ abstract class PagerViewer(val activity: ReaderActivity) : Viewer {
         }
 
         pager.addOnPageChangeListener(pagerListener)
+        // Manually call onPageChange to update the UI
+        onPageChange(pager.currentItem)
     }
 
     /**