@mention not working on confluence cloud

[Hanson Lee]

I am trying to create a confluence demo for my company using the free version of Confluence Cloud. However, I am not able to get the @mention to work. Whenever I type @my_username, the search box does not appear to select a user. Since this is Confluence Cloud, there is no rebuilding index option. I made sure that "Disable auto-formatting" and "Disable auto complete" is unchecked in my editor setting. I waited for 1 day but the issue is not resolved. The confluence cloud version is Confluence 1000.0.0-949df984f929. 

Any other idea I should try? 

Thanks.

[Radu Dumitriu · Accepted solution]

modify your log4j configuration and set the level for that particular class on ERROR

[stuartu]

Thanks. The following did the trick.

log4j.logger.com.atlassian.confluence.velocity.introspection.AnnotationBoxingUberspect=ERROR