diff --git a/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailViewEvents.kt b/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailViewEvents.kt
index 3b274bce91..d1ddc382a4 100644
--- a/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailViewEvents.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailViewEvents.kt
@@ -84,5 +84,5 @@ sealed class RoomDetailViewEvents : VectorViewEvents {
     object StopChatEffects : RoomDetailViewEvents()
     object RoomReplacementStarted : RoomDetailViewEvents()
 
-    data class ScDbgReadTracking(val event: TimelineEvent?) : RoomDetailViewEvents()
+    data class ScDbgReadTracking(val event: TimelineEvent?, val unreadState: UnreadState) : RoomDetailViewEvents()
 }
diff --git a/vector/src/main/java/im/vector/app/features/home/room/detail/TimelineFragment.kt b/vector/src/main/java/im/vector/app/features/home/room/detail/TimelineFragment.kt
index 77a6c6805d..81e807b867 100644
--- a/vector/src/main/java/im/vector/app/features/home/room/detail/TimelineFragment.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/detail/TimelineFragment.kt
@@ -610,7 +610,7 @@ class TimelineFragment @Inject constructor(
     }
 
     private fun handleScDbgReadTracking(action: RoomDetailViewEvents.ScDbgReadTracking) {
-        views.scRoomDebugView.text = "Read: ${action.event?.eventId}/${action.event?.displayIndex}"
+        views.scRoomDebugView.text = "UnreadState: ${action.unreadState.javaClass.simpleName}\nRead: ${action.event?.eventId}/${action.event?.displayIndex}"
     }
 
     override fun onImageReady(uri: Uri?) {
diff --git a/vector/src/main/java/im/vector/app/features/home/room/detail/TimelineViewModel.kt b/vector/src/main/java/im/vector/app/features/home/room/detail/TimelineViewModel.kt
index a8e929e674..08a12436b2 100644
--- a/vector/src/main/java/im/vector/app/features/home/room/detail/TimelineViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/detail/TimelineViewModel.kt
@@ -161,7 +161,9 @@ class TimelineViewModel @AssistedInject constructor(
         set(value) {
             field = value
             if (DbgUtil.isDbgEnabled(DbgUtil.DBG_SHOW_READ_TRACKING)) {
-                _viewEvents.post(RoomDetailViewEvents.ScDbgReadTracking(mostRecentDisplayedEvent))
+                withState {
+                    _viewEvents.post(RoomDetailViewEvents.ScDbgReadTracking(mostRecentDisplayedEvent, it.unreadState))
+                }
             }
         }
 
@@ -1178,6 +1180,9 @@ class TimelineViewModel @AssistedInject constructor(
     private fun observeUnreadState() {
         onEach(RoomDetailViewState::unreadState) {
             Timber.v("Unread state: $it")
+            if (DbgUtil.isDbgEnabled(DbgUtil.DBG_SHOW_READ_TRACKING)) {
+                _viewEvents.post(RoomDetailViewEvents.ScDbgReadTracking(mostRecentDisplayedEvent, it))
+            }
             if (it is UnreadState.HasNoUnread) {
                 startTrackingUnreadMessages()
             }