XAML designer is busy when I click on a RadComboBox

[Paul]

Hi

I'm getting error in the VS2022 designer when I click on a RadComboBox.
It shows a busy cursor and then a dialog with the message "XAML designer is busy"

When I cancel the dialog it shows a message that an unhandled exception has occurred with the option to reload the designer.
The only way to make the RadComboBox clickable is to switch on "only display platform controls"
Then it shows a generic looking control in the place of the RadComboBox

This is happening on version 2022.3.1109 but was also happening on 2022.2.621

Is this something you can fix? or is the problem something that you have to wait on Microsoft for

Thanks
Paul Mc

 

[Dilyan Traykov]

Hi Paul,

Thank you for the provided image.

We're already aware of this issue and have actually contacted Microsoft in search of a solution: 17.4 hangs when using custom DesignModeValueProvider - WPF DesignTools.

You can also follow the bug report we've logged in our feedback portal here: Buttons: Clicking on a RadDropDownButton in the Visual Studio designer makes it crash.

Once we get a reply from Microsoft we will update the feedback item accordingly.

Regards,
Dilyan Traykov
Progress Telerik