Disable Gravatar not working in project commits page


I have disabled Gravatar in Admin → Setting → General → Account and Limit.
also configure it in /etc/gitlab/gitlab.rb like following:
and rebooted server
version: 14.10.5

### Gravatar Settings
# gitlab_rails['gravatar_plain_url'] = 'http://www.gravatar.com/avatar/%{hash}?s=%{size}&d=identicon'
# gitlab_rails['gravatar_ssl_url'] = 'https://secure.gravatar.com/avatar/%{hash}?s=%{size}&d=identicon'
gitlab_rails['gravatar_enabled'] = false

but i still found the projects commits page connecting to https://secure.gravatar.com. showing following screenshoot:
it OK in project member page.
So Am I miss some configure ?