Yes just open the demand table which you are facing the issue. Follow the steps uncheck set the List edit insert row checkbox. Then run the report again the inset new row will not be visible in the report application. 

You are facing this issue only while running report on the demand table because the demand table has list edit insert row checkbox checked.

I have tried this It works. please find screenshots.

When it is checked Lit edit insert row checkbox.

See the reports application which you are talking about. It has insert a new row.

When I uncheck it 

See the same incident table in reports doesn't have insert a new row

Just replace incident table here with demand this will definitely fix your issue. worth a shot.

Thanks,

Abhishek