diff --git a/retroshare-gui/src/gui/gxsforums/GxsForumThreadWidget.cpp b/retroshare-gui/src/gui/gxsforums/GxsForumThreadWidget.cpp
index e37f783cb..e71a400b2 100644
--- a/retroshare-gui/src/gui/gxsforums/GxsForumThreadWidget.cpp
+++ b/retroshare-gui/src/gui/gxsforums/GxsForumThreadWidget.cpp
@@ -415,16 +415,12 @@ void GxsForumThreadWidget::handleEvent_main_thread(std::shared_ptr<const RsEvent
 
         case RsForumEventCode::SUBSCRIBE_STATUS_CHANGED:
             if(e->mForumGroupId == mForumGroup.mMeta.mGroupId)
-            {
-                // Toggle subscribe flag locally and refresh UI without GXS request
-                // to avoid concurrent request with parent dialog's tree rebuild
-                if(IS_GROUP_SUBSCRIBED(mForumGroup.mMeta.mSubscribeFlags))
-                    mForumGroup.mMeta.mSubscribeFlags &= ~GXS_SERV::GROUP_SUBSCRIBE_SUBSCRIBED;
-                else
-                    mForumGroup.mMeta.mSubscribeFlags |= GXS_SERV::GROUP_SUBSCRIBE_SUBSCRIBED;
-
+                // Re-read the group instead of guessing the new flag by flipping
+                // the current one: the event says the status changed, not that it
+                // was toggled, and a wrong guess makes the widget believe the
+                // forum is unsubscribed, which silently disables marking posts
+                // read or unread until the group data comes back.
                 updateGroupData();
-            }
             break;
 
         default: break;