Tried with clean new app, all the same.
"Syncfusion.Chart.WPF.Classic" version="16.2.0.46" targetFramework="net45" />
"Syncfusion.Compression.Base" version="16.2.0.46" targetFramework="net45" />
"Syncfusion.DocIO.Base" version="16.2.0.46" targetFramework="net45" />
"Syncfusion.Edit.WPF" version="16.2.0.46" targetFramework="net45" />
"Syncfusion.Gauge.WPF" version="16.3.0.21" targetFramework="net45" />
"Syncfusion.Grid.WPF" version="16.2.0.46" targetFramework="net45" />
"Syncfusion.GridCommon.WPF" version="16.2.0.46" targetFramework="net45" />
"Syncfusion.Licensing" version="16.3.0.21" targetFramework="net45" />
"Syncfusion.Linq.Base" version="16.2.0.46" targetFramework="net45" />
"Syncfusion.Pdf.Base" version="16.2.0.46" targetFramework="net45" />
"Syncfusion.PropertyGrid.WPF" version="16.2.0.46" targetFramework="net45" />
"Syncfusion.ReportControls.WPF" version="16.2.0.46" targetFramework="net45" />
"Syncfusion.ReportDesigner.WPF" version="16.2.0.46" targetFramework="net45" />
"Syncfusion.ReportViewer.WPF" version="16.2.0.46" targetFramework="net45" />
"Syncfusion.ReportWriter.Base" version="16.2.0.46" targetFramework="net45" />
"Syncfusion.RichTextBoxAdv.WPF.Classic" version="16.2.0.46" targetFramework="net45" />
"Syncfusion.SfMaps.WPF" version="16.2.0.46" targetFramework="net45" />
"Syncfusion.Shared.WPF" version="16.3.0.21" targetFramework="net45" />
"Syncfusion.Tools.WPF" version="16.2.0.46" targetFramework="net45" />
"Syncfusion.XlsIO.Base" version="16.2.0.46" targetFramework="net45" />
Then on any operation ( like preview ) am getting "Object reference not set to an instance of an object" exception.
Same with previous versions. Visual Studio 2017 with latest updates, Win10.