I have a grid which displays document details. The grid is populated on page loa

I have a grid which displays document details. The grid is populated on page load. The data subset for the grid is from a Query Entity. I have set the pagination - start index to 1 and batch size to 10. One of the rows in the first page of the grid is getting repeated in the second page of the grid. This occurs randomly. In some cases, more than one row is getting repeated in the next page.
But when the Query Entity is tested, there is only one entry of the particular Document ID.
The identifier used is of the type "NUMBER" in DB.
Can someone please throw some light on this issue

OriginalPostID-186918

OriginalPostID-186918