CO controls hidden after grouping survey results

Summary

CO and Survey

Content

I created a custom object which includes survey to be opened in a new tab not to be a part of tab and I linked a survey history report (that seeded to system after I mad some edits) but I foumd a duplicated results in the report so I out a check mark on (Group Results) which in the Ribbon Bar then I get what I need "unique results" but the problem here is that custom object controls are hidden now "Such as Add new / Open .." as shown below.
What should I do to get unique results and simultaneosly use the custom object controls ?