lastEmpty session cursors.

internal/websocket/manager.go

@@ -139,6 +139,8 @@ func (manager *WebSocketManagerCtx) Start() {
 		ticker := time.NewTicker(500 * time.Millisecond)
 		defer ticker.Stop()
 
+		lastEmpty := false
+
 		for {
 			select {
 			case <-manager.shutdown:
@@ -146,9 +148,15 @@ func (manager *WebSocketManagerCtx) Start() {
 			case <-ticker.C:
 				cursorsMap := manager.sessions.PopCursors()
 				if len(cursorsMap) == 0 {
+					if lastEmpty {
 						continue
 					}
 
+					lastEmpty = true
+				} else {
+					lastEmpty = false
+				}
+
 				cursors := []message.SessionCursor{}
 				for session, cursor := range cursorsMap {
 					cursors = append(