Spring Session Redis Index Key not deleted when session expired

[Bigcream]

Describe the bug
"spring:session:index:org.springframework.session.FindByIndexNameSessionRepository.PRINCIPAL_NAME_INDEX_NAME:springbootuser"
not deleted in redis when session expired ( didn't have any session key exist)
Although I was config this redis-cli config set notify-keyspace-events Egx in my redis (running in docker) and I also having entries starting with Publishing SessionDestroyedEvent for session logged
I'm using Sping boot 2.5.12 and Spring session redis 2.7.4

Expected behavior
(spring:session:index:org.springframework.session.FindByIndexNameSessionRepository.PRINCIPAL_NAME_INDEX_NAME:springbootuser)

Key clear when don't have any session key available in my redis.

[marcusdacoregio]

Closing as duplicate. Please see #2869 (comment)