Unpinned RadPane with WindowsFormsHost Hides on Click

Environment

Product	RadDocking for WPF
Version	2024.3.821

Description

Unpinned RadPane elements with HwndHost (like WinFormsHost) content auto-hide on click insde the pane (over the HwndHost area).

Cause

The issue occurs because of the interoperation between the WinForms and WPF technologies and their corresponding regions ("airspaces"). Clicking in the WinFormsHost content, steals the mouse from the WPF application, which triggers an event chain that closes the pane.

Solution

To prevent this, change the FlyoutBehavior property of RadDocking from its default HoverFlyoutBehavior to ClickFlyoutBehavior.

<telerik:RadDocking.FlyoutBehavior> 
    <telerik:ClickFlyoutBehavior/> 
</telerik:RadDocking.FlyoutBehavior>