Thank you for writing back.
Controls from the Telerik UI for WinForms are not supposed to behave differently on Windows 10 machine. Note that the referred KB article relates to RadGridView
for Winforms, Q2 2013. However, you use an older version. RadGridView
was refactored in 2010. Hence, prior versions may not offer a similar experience as the description one in the KB article. The best approach is to upgrade to the latest version and use the introduced built-in functionality. Thus, you can benefit from all the introduced improvements and new features.
I hope this information helps. If you have any additional questions, please let me know.