While editing the XAML document, I'm experiencing weird behavior in VS2019. 

All examples apply when the Design editor is active together with XAML editor.

Example 1:

Selecting XAML with mouse stops when I start selecting the telerik:RadComboBox.

Example 2:

Copy Pasting bugs out, either the selection is empty or incorrect.

Example 3:

'Forcus' in Visual Studio is sometimes overtaken by the RadComboBox.