problem with dhtmlx grid and mygrid.enableSmartRendering

I have a problem with my grid display. In my grid details first column is supposed to be a hyperlink and this worked fine untill I have enabled smart rendering to improve the performance of the grid. But when I did this, the dropdown box of my first column is showing hyperlink along with text for all the records except first three and first three records seems to be fine. On the grid every thing looks okay but in the dropdown list problem persists

It appears like this