You have noted that when you have the position right to return feature enabled and the employee has a leave for a period longer than mere vacation in the Organizational Information section in the Employee Profile, the position information shows a "no data".
"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."
- SAP SuccessFactors Employee Central
- Position Management
This is how the system is designed. Once the position is not occupied at that time and it is free to have a new or a temporary employee assigned. Then it is expected behavior that it shows as "no data".
Position Right to Return , KBA , LOD-SF-EC-POS , Position Management , LOD-SF-EC , Employee Central , Problem