[windows] A mistery node appeared during rebalance

repro:
1. Initially we have 3 nodes cluster, 5M items, 5 views
2. add a node
3. Rebalance is failed ( disk is full on 1 of the nodes)
4. 4 nodes are shown
5. failover just added node, and 1 more node
6. start rebalance

progress bar is showing 5 nodes(but actually we have 4) and rebalance progress RQ returns some "undefined" node:
{"status":"running","ns_1@10.1.3.151":

{"progress":0.0}

,"undefined":

{"progress":1.0}

,"ns_1@10.1.3.135":

{"progress":0.623021582733813}

,"ns_1@10.3.3.38":

{"progress":0.0}

,"ns_1@10.3.3.39":

{"progress":0.18057022175290394}

}