When returning N-F nodes to the pool, "View change" does not occur if Primary node is stopped

Steps to Reproduce:
1) Create pool from 4 nodes, where node2 is primary
2) Stop indy-node service on node4
3) Stop indy-node service on node2
4) Send some NYM from client
=> There is no feedback from pool (consensus is lost)
5) Start indy-node service on node4
=> "view change" was not happened after node start, consensus was not restored
6) Send some NYM from client
=> No "view change" by timeout or after request
7) Start indy-node service on node2
8) Send some NYM from client
=> "view change" was made after request, requests were written

Actual Results:
View change was not happened when the pool comes back to consensus with stopped primary node.

Expected Results:
View change should happen when the pool comes back to consensus with stopped primary node.