Infragistics Ribbon buttons (latest version 10.2) (see below for details), when used in a Silverlight 4 application with Silverlight dialogs (i.e., ChildWindow) keep on highlighted (i.e., appear in focus) after being clicked, and after some use the application freezes.

I made a small Silverlight 4 example to reproduce the problem with Infragistics buttons on the ribbon. The problem exists in buttons in XamRIbbon (e.g., ig:XamRibbonGroup  , ig:ButtonTool where          xmlns:ig="http://schemas.infragistics.com/xaml" ).

The same problem  is observed in XAMOutlookbar (e.g., ig:OutlookBarGroup).

To reproduce:

1. Run the Silverlight4 application TestInfragisticsIssue.

2. Click on each of the five buttons named Task#.

3. Each click opens a dialog. Click on the OK button to close it.

OBSERVE 1: The buttons will stay highlighted (focused) even after the corresponding dialogs are closed.

OBSERVE 2: If you are patient enough and play by clicking and switching the application freezes. It may take 20-25 clicks for that. However, in our application we freeze after 4-6 clicks.

I can't attach the sample project because the file is too large but I can email it to you.