I have a DataGrid where I have frozen the first two columns. The second column would appear too far to the right and overlap part of the third column. The first column is narrow with a Width="3rem" and the browser DevTools show the second column with a left value = 200. It took me a bit to figure it out. The first two image below show the problem reproduced from the demos. The code in the image at the bottom seems to be the problem. I have no idea if this is a bug or if this is the way it was meant to be. Using px solves the problem.
DataGrid Frozen Columns Example Reproducing Issue
DataGrid Frozen Columns Example Source Code
RadzenDataGridColumn.cs
