Hello, Rob,
RadGridView offers a property that controls the height of the column headers. Please have a look whether the TableElement.TableHeaderHeight is set at run time. It is expected to affect the header row's height. It is also important to know whether the AutoSizeRows property is enabled/disabled.
As to the scaling, the grid control doesn't seem to be increased in size. Only the header row is enlarged. Are you running the application at DPI scaling higher than 100%? Is you application DPI-aware? Thank you in advance for your cooperation.
I am looking forward to your reply.
Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik
Progress is here for your business, like always.
Read more about the measures we are taking to ensure business continuity and help fight the COVID-19 pandemic.
Our thoughts here at Progress are with those affected by the outbreak.