Auto complete is enabled in the instance, Auto complete is working fine in all the features except Compensation create worksheets.
"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."
Production & Test
Reproducing the Issue
Auto complete of users name is workinng fine in other places.
Auto complete not working in create worksheet page
Hide (user name) in the UI option is enabled in provisioing.
The find employe (Create worksheet page) is a general common component which works/aimed for finding and list users, Hide username is enabled then the find user will ignore autocomplete feature in compensation.
Disable "Hide (user name) in the UI" in provisioing -> Company Settings
Auto complete , KBA , LOD-SF-CMP-ADM , Admin Tools, Settings, Permissions , Problem