vertical scroll bar not working correctly in case of smart r

In my grid I have enabled smart rendoring and wnen I use vertical scroll bar some times it get shifted to top of grid.

Can you please tell me how to fix this.

This causes issue when grid has columns in freez section

In case of multiline content in your rows please, try to enable multiline:
grid.enableMultiline(true)
docs.dhtmlx.com/doku.php?id=dhtm … emultiline

In case of modified row height please, try to use setAwaitedRowHeight() method:
docs.dhtmlx.com/doku.php?id=dhtm … drowheight

If issue still occurs, please, make sure that you are using the latest version of dhtmlxgrid.
If it still occurs after updating, please, provide with a complete demo, where it can be reproduced, so we can suggest a proper solution.