Hi Amit,
The issue of
"Hscroll bar doesnot display full text of the child node of TreeViewAdv control" has been internally fixed.The fix for this defect is available in our Development build v6.2.0.2.
Please refer the below link for the weekly development build updates.
http://www.syncfusion.com/downloads/product/build.aspxPlease let me know if you have any questions.
Regards,
Manopriya