The @ symbol doesn't provide a user drop down list

[r2d2]

The @ symbol doesn't work for one user in Jira comments. The user has attempted to tag users including myself however the user isn't presented with a drop down list. User is on the same version of edge as myself.

Any suggestions on the root cause? 

[Alex Koxaras _Relational_ · Accepted solution]

Hi @r2d2 

You have to see if that user belongs to the group with the global permission of "browse users and groups". If not, add him.