Hi Nikhil,
Thank you for your interested in Syncfusion product
I have created a minimal sample to reproduce the issue in our end, , I couldn’t able to find the issue with this sample, scroll behaviour is working properly in our end . We have checked the issue in our latest version and also in 12.3.0.36 also. So I requested you to please provide the sample to find the exact issue in our end. It will help us to provide the solution quickly. And also you can follow up the incident 140070 for further updates.
Sample file : http://www.syncfusion.com/downloads/support/directtrac/140070/ze/GDBG_HierDelete-348471570
Please let me know if you have any concerns,
Regards,
Vinish K.