Raft election using consul leave

Hello Hashicorp folks!!
I'm using consul v1.7.2, in my setup I have 5 consul-servers.
If i gracefully stop one of the consul servers (not the current leader) using `consul leave && systemctl stop consul` and then i start the process backs up a new leadership election starts.

If i just stop the process with `systemctl stop consul` a new election isn't triggered.

Is this the correct behavior?
It seems wrong to me trigger an election when a non leader server is gracefully stopped.

Reproduce the behavior on Consul v1.7.2 with five servers, comparing `consul leave && systemctl stop consul` against `systemctl stop consul`. Review the election and membership behavior involved, then determine whether the differing outcomes are expected; done means the behavior is explained and any confirmed defect is fixed with regression coverage.

Written by the indexing model from the issue text.