When navigating to a page with a RadRichTextEditor, it sometimes pops up an error on page load.  It is inconsistent, but I attached an example gif.  The xaml on the page I'm navigating to is basic:

  <Grid Margin="20">
    <telerik:RadRichTextEditor x:Name="RichTextEditorControl"
                               BorderColor="Black"
                               BorderThickness="1" />
  </Grid>

 

I believe this problem started with MAUI version 9.0.70.  Possibly with one of these changes:

https://github.com/dotnet/maui/pull/27003/files

https://github.com/dotnet/maui/pull/28354/files

 

A NullReferenceException is thrown during the measure phase of a DataGridTextColumn when a CellRenderer is applied:

Object reference not set to an instance of an object.
   at Telerik.Maui.Controls.DataGrid.DataGridColumn.MeasureDrawingPaintable(LambdaPaintable lambdaPaintable, Object measureContext)
   at Telerik.Maui.Controls.SkiaSharp.SkiaLambdaPainter.Measure(MeasureablePaintable paintable, PurePainterContext context, Double widthConstraint, Double heightConstraint)
   at Telerik.Maui.Controls.DataGrid.MasterArranger.MeasureNodeContainer(Object container, Double widthConstraint)
   at Telerik.Maui.Controls.DataGrid.MasterArranger.MeasureNodeContainer(Object container, Double widthConstraint)
   at Telerik.Maui.Controls.DataGrid.MasterArranger.MeasureGridCellModel(GridCellModel model)
   at Telerik.Maui.Controls.DataGrid.CellModelGenerator.GetSize(GridCellModel decorator)
   at Telerik.Maui.Controls.DataGrid.CellsController`1.GenerateCellsForRow(IItemInfoNode rowModel, Int32 rowSlot)
   at Telerik.Maui.Controls.DataGrid.NodePool`2.GenerateModelsForInfos(IList`1 itemInfos, ModelGenerationContext modelGenerationContext, MeasureContext measureContext)
   at Telerik.Maui.Controls.DataGrid.NodePool`2.MeasureForward(MeasureContext& context)
   at Telerik.Maui.Controls.DataGrid.NodePool`2.MeasureVertically(RadSize availableSize, Double offset, Double verticalBuffer)
   at Telerik.Maui.Controls.DataGrid.NodePool`2.OnMeasure(RadSize availableSize, Double offset, Double verticalBuffer)
   at Telerik.Maui.Controls.DataGrid.GridModel.MeasureCells(RadSize availableSize)
   at Telerik.Maui.Controls.DataGrid.DataGridContentLayout.Measure(Double widthConstraint, Double heightConstraint)
   at Microsoft.Maui.Platform.MauiPanel.MeasureOverride(Size availableSize)
   at ABI.Microsoft.UI.Xaml.IFrameworkElementOverrides.Do_Abi_MeasureOverride_0(IntPtr thisPtr, Size availableSize, Size* result)

Appointments are not rendered accurately when scrolling through the time ruler and using appointment template selector and custom appointments

When having a waterfront image in the document, it is displayed as a foreground element.

When having a TreeView inside SlideView content, cannot change the slides using pan gesture

expand a row and collapse it. Or expand a few rows, scroll around a bit, and then collapse one. You can get into some weird situations. Gray background over the group, row background and alternate styles are reset. 

Cannot scroll to the first messages when the keyboard appears. When the keyboard is closed, the messages can be reached.

Thumb position is misplaced when applying style through trigger and setting width.

When applying a style through triggers the position of the track is misplaced only first time.

Delegate aggregate descriptor does not update value in the UI when adding/removing item.

The behavior also happens with the property aggregate descriptor.

When adding an entry in the popup content and focusing the entry, the popup background crops on bottom when the keyboard appears.

The issue happens only on emulators pixel 7 pro, pixel 6a, android 13,14,15 etc. Currently, cannot reproduce on a real device.

Create a blank telerik project (I've not used shell);
Update maui to 9.0.50 (for more relevance with current code);
Replace the contents of MainPage.xaml with the xaml shown below;
Remove unnecessary code from MainPage.xaml.cs to allow app to build and run;
OBSERVE:
Test 1.2 fails - items are shown on a single row when they should not fit.
Test 1.3 fails - items are shown on a single row when they should not fit, and the wrap layout is extended to two rows.
Test 2.1 fails - items are show on two rows when they should fit a single one.

There is a thin line between the header items when rotating the device in landscape mode

When loading a pdf from a file, uri, etc, except as an embedded resource and Switching the app to background and then to foreground again forces an app restart. This is due to the fact that the stream closes. 

When a TelerikSlider is placed inside a layout that contains a view above the slider (e.g. a BoxView) that toggles visibility based on the slider’s value, an unexpected behavior occurs:

If the user is clicking on a slider value that toggles the visibility of the green box to change (either show or hide), the slider thumb continues to follow the mouse cursor even after the drag should have ended. This continues until the user explicitly clicks somewhere on the slider again.

When setting horizontal text alignment to center, the text in Telerik Entry is not centered. In MAUI entry works. 

 

Aggregates error appears in column with nested properties when the data you want to group by is not set by the time the data grid's ItemsSource is set,

The control is enabled even when IsEnabled is set to false. 

When having more items in the drawer content, the content does not resize dynamically, so the items to be visible. There is an inconsistency on the platforms:

On WinUI the drawer content does not display at all

On Android, the content displays as expected

On iOS and on MacCatalyst, the drawer content does not measure as expected. part of the content is not displayed. 

The workaround for now is applying a fixed length by setting the SideDrawer.DrawerLength property. 

I have TabView which contains multiple tabs and tabs contains ScrollView with multiple entry elements.

After click on entry keyboard on android in the first tab, the content moves so you can see what to type in the input.

For all other tabs, the keyboard covers the entry.