diff --git a/lib/controllers/room_chat.dart b/lib/controllers/room_chat.dart
index 773f30d..fd6c12a 100644
--- a/lib/controllers/room_chat.dart
+++ b/lib/controllers/room_chat.dart
@@ -3,6 +3,7 @@ import "dart:math";
 
 import "package:collection/collection.dart";
 import "package:fast_immutable_collections/fast_immutable_collections.dart";
+import "package:flutter/foundation.dart";
 import "package:flutter_riverpod/flutter_riverpod.dart";
 import "package:fluttertagger/fluttertagger.dart";
 import "package:nexus/controllers/attachment.dart";
@@ -83,6 +84,14 @@ class RoomChatController(final ChatParams info)
           .where((rowId) => room.events[rowId]?.threadRoot == null)
           .toIList();
 
+      // TODO: remove, debugging replies not showing
+      debugPrint(
+        "[timeline] build ${info.roomId}: "
+        "syncedTail=${room.timeline.entries.sortedBy<num>((entry) => entry.key).reversed.take(5).map((entry) => "${entry.key}:${entry.value}").toList()} "
+        "clientSticky=${room.clientSticky.toList()} "
+        "chatTail=${timeline.reversed.take(5).toList()}",
+      );
+
       if (info.contextualEvent == null ||
           timeline.contains(info.contextualEvent)) {
         ref.watch(
@@ -456,6 +465,11 @@ class RoomChatController(final ChatParams info)
 
   /// Shows [event], which was just sent, until it comes down sync.
   void addSent(Event? event) {
+    // TODO: remove, debugging replies not showing
+    debugPrint(
+      "[timeline] addSent: rowId=${event?.rowId} eventId=${event?.eventId} "
+      "alreadySynced=${ref.read(RoomsController.provider)[info.roomId]?.timeline.values.contains(event?.rowId)}",
+    );
     if (event case final event?) {
       ref
           .read(RoomsController.provider.notifier)
diff --git a/lib/helpers/hooks/chat_scroll.dart b/lib/helpers/hooks/chat_scroll.dart
index 611c85a..189b5ed 100644
--- a/lib/helpers/hooks/chat_scroll.dart
+++ b/lib/helpers/hooks/chat_scroll.dart
@@ -101,6 +101,13 @@ final class ChatScroll({
       final anchorIndex = items.indexOf(anchor);
 
       final historyLength = anchorIndex == -1 ? items.length : anchorIndex + 1;
+      // TODO: remove, debugging replies not showing
+      debugPrint(
+        "[timeline] split: anchor=$anchor anchorIndex=$anchorIndex "
+        "length=${items.length} "
+        "historyTail=${items.take(historyLength).toList().reversed.take(3).toList()} "
+        "live=${items.skip(historyLength).toList()}",
+      );
       return (
         history: items.take(historyLength).toIList().reversed.toIList(),
         live: items.skip(historyLength).toIList(),
@@ -113,6 +120,11 @@ final class ChatScroll({
     useEffect(() {
       final previous = previousLastRowId.value;
       previousLastRowId.value = lastRowId;
+      // TODO: remove, debugging replies not showing
+      debugPrint(
+        "[timeline] lastRowId: previous=$previous last=$lastRowId "
+        "atBottom=${atBottom.value} contextualEvent=${contextualEvent.value}",
+      );
 
       if (previous == null || lastRowId == null || previous == lastRowId) {
         return null;
@@ -120,6 +132,11 @@ final class ChatScroll({
       if (!atBottom.value || contextualEvent.value != null) return null;
 
       WidgetsBinding.instance.addPostFrameCallback((_) {
+        // TODO: remove, debugging replies not showing
+        debugPrint(
+          "[timeline] re-anchoring to $lastRowId "
+          "hasClients=${scrollController.hasClients}",
+        );
         if (!scrollController.hasClients) return;
 
         anchorId.value = lastRowId;