dif-sam

As workaround, try add this code before use triggers somewhere in applications initialization: ``` cs if (!TypeDescriptor.GetAttributes(typeof(Avalonia.Thickness)).Cast().Any(x => x is TypeConverterAttribute)) { TypeDescriptor.AddAttributes(typeof(Avalonia.Thickness), new TypeConverterAttribute(typeof(ThicknessTypeConverter))); } /*...*/ public class ThicknessTypeConverter...

As possible workaround, you may set property `UseLayoutRounding` to `False` in the style for `DataGridColumnHeader`.