Alert windows - Window corners are rounded using the Common.AlertWindow.CornerRadius additional property setting if the skin controller's UseImageSet property is set to imsAlternate
Answers approved by DevExpress Support
We have fixed the issue described in this ticket and will include the fix in our next maintenance update. To apply this solution before the official update, request a hotfix by clicking the corresponding link for product versions you require.
Note: Hotfixes may be unavailable for beta versions and updates that are about to be released.