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Steps to reproduce:
1) Compile and run Syncfusions's WinUI demo program ( syncfusion.samplebrowser.winui_net50.sln ).
2) Go to the DataGrid demos and click the "Getting Started" tile to bring up a populated data grid.
3) Click the header of any column quickly and repeatedly (many times) to sort (ascending/descending) until the program crashes with an unhandled error trapped in App.g.i.cs (see attached screen capture).
Windows 10 ( 19042.1237 ) / VS 2019 & VS 2022 / Syncfusion WinUI ( 19.3.0.43 ) / WinUI (Desktop)
This error can also be duplicated in the simplest possible application including the Syncfusion WinUI DataGrid.