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-rw-r--r--lib/room.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/room.cpp b/lib/room.cpp
index 71d76f66..8253ea42 100644
--- a/lib/room.cpp
+++ b/lib/room.cpp
@@ -515,7 +515,9 @@ void Room::Private::updateUnreadCount(rev_iter_t from, rev_iter_t to)
// that has just arrived. In this case we should recalculate
// unreadMessages and might need to promote the read marker further
// over local-origin messages.
- const auto readMarker = q->readMarker();
+ auto readMarker = q->readMarker();
+ if (readMarker == timeline.crend() && q->allHistoryLoaded())
+ --readMarker; // Read marker not found in the timeline, initialise it
if (readMarker >= from && readMarker < to) {
promoteReadMarker(q->localUser(), readMarker, true);
return;