If Hyperlink are placed in the content of the control while the IsBusy is set to true, those links are disabled.
The XAML team has recently reviewed this issue and will not be addressing it as at this time the team is focusing on the bugs impacting the highest number of developers. If you have encountered this issue and it is blocking for your work please contact us through the support ticketing system with details on your setup and a reference to this item. Also, the problem is that Hyperlink's IsEnabled property is set to false initially (as RadBusyIndicator is disabling the content). But after that IsEnabled property is not changed, even if its parent's IsEnabled is changed. This is framework behavior. The solution is to bind IsEnabled of the Hyperlink to IsEnabled of its parent. More info here: http://siderite.blogspot.com/2011/06/wpf-hyperlinks-and-isenabled-mystery.html
This appears to be an issue with Hyperlink rather than the busy indicator control. I've found reports of similar problems with Hyperlink completely unrelated to this control. A workaround that works for me is to bind the Hyperlink's Enabled property to som