We suggest you should find out if the user has the "view team worklogs" permission in the TEAMsfor a TEAM the worklog owner is a member.
Here you will find some information on that: Team Permissions - Tempo Cloud and Team Permissions - Tempo Server.
Or, Please also check if the user could have has the "View All Worklogs" permission for the PROJECTs.
More information on that about this permission can be found here: Project Permissions - Tempo Cloud and Project Permissions - Tempo Server. | 
