We are developing projects using Telerik controls. Including 1 module with zoom feature for RadGridView. I ran your sample in link (https://www.telerik.com/forums/scale-font-with-grid-width#dO4Kn_YdzEW3UENkNr5GUg) .
But there was a problem when I zoomed out. Border in row is lost, and this disappearance is asynchronous (In the photo attached). You can consider this issue not help me?