Keyboard focus is lost on CompletionListWindow when setting runtime new collection to the CompletionListItems property. The values inside CompletionListWindow can't be selected through the keyboard arrow keys.

When the control is inside ScrollViewer and you click it, focus is lost and caret disappears. Some controls have built in ScrollViewer , for example LayoutControl so placing the editor in LayoutControl also leads to the same issue.

Generally placing the syntaxeditor in scrollviewer is risky for the vertical virtualization so at least a height should be set to the control. In R2 2020 SP, an exception will be thrown if Syntax Editor with no height is added in scroll viewer or stack panel or other panel which measures vertically with infinity.

Workaround for this issue:

        private void syntaxEditor_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            e.Handled = true;
        }

SyntaxEditor is in RadListBoxItem.

Entering space key does not produce text change and gets the focus lost our of the editor.

Workaround:

    private void RadSyntaxEditor_PreviewKeyDown(object sender, KeyEventArgs e)
        {
            if (e.Key == Key.Space)
            {
                (sender as RadSyntaxEditor).Insert(" ");
                e.Handled = true;
            }
        }

SyntaxEditor showing XML/Html/XAML File and XMlFoldingTagger is registered.

Deleting the last bracket symbol ">" results in exception in XMLFoldingTagger.cs

If secondary wpf window is opened in an application, the enter key does not work in SyntaxEditor. It does not produce new line as expected.

Hello,

When we resize the syntaxEditor control, the folding buttons moved. You can reproduce this isssue in your demos.

 

1. Reduce the contents of the sample
2. Increase the size of sample window and see the buttons are not besides the line

 

Best regards,

'Cannot find resource named 'DragVisualStyle' error occurs in in the error list when using implicit styles.

If you have an XML attribute with a string value, but the value is not fully rendered into the viewport, its color defaults to black, instead of the expected blue color.

To work this around, you can create a custom XmlTagger and override its GetTags() method. This will allow you to properly catch the string value and return it as a tag span element with its ClassificationType set to "string".

Folding tagger does not work for other languages than C#.