Killing broker leader

Hi,

I installed zookeeper and kafka 8.0 following the quick start (
https://kafka.apache.org/documentation.html#quickstart) and when i try to
kill my leader, i got a lot of exception in my producer and consumer
consoles.

Then, after the exceptions stop printing, some of the messages I produce in
my console don't print in my consumer console...

The exception I get is "java.net.ConnectException : Connection refused".

Did someone already had this problem?

Thank you!

PS: I have 3 brokers running on my system.