Régis Brid

I am seeing the same issue using the Windows Community Toolkit's built-in SampleApp (its DataGrid control test page). Debug screenshot:  Release screenshot:  The 'dataGrid' appears only in the...

One of our automation gurus provided this info that could be helpful: "I do not see that exact result, but I would check DataGridRowsPresenter and its functionality to return children....

@DanielGlick45, sorry for the confusion, he was talking about automation peer children, as in DataGridRowsPresenterAutomationPeer's returned children. Is DataGridRowsPresenterAutomationPeer.GetChildrenCore() returning children representing the rows?

@wbokkers, thank you very much for the information you provided. This looks very much like a bug I have been investigating recently. That one depends on the Scale factor used...

Thank you @wbokkers, I can repro the crash now. The reason why I did not repro earlier is because I was using a plain UWP app. I needed to make...

@wbokkers, yes you bet it will be ported into WinUI 3.

Tracked by internal task 27649649 (and originally bug 27512832).

Thanks for your bug report. We are in the process of fixing it.

I don't have a good workaround in mind for this. It looks like a bug in ...\WindowsCommunityToolkit\Microsoft.Toolkit.Uwp.UI.Controls.DataGrid\DataGrid\DataGridCellsPresenter.cs's _protected override Size MeasureOverride(Size availableSize)_. ``` if (double.IsNaN(this.OwningGrid.RowHeight)) { // No explicit height...

Thanks for your report torleifat. Each ItemsRepeater Layout subclass supports Collapsed elements more or less. In general, collapsing ItemsRepeater children is really not recommended, in particular not for virtualizing layouts....