When apply the theme using SfSkinManager by enabling ApplyStylesOnApplication property does not apply the theme properly. So, need to analyze the behaviour of ApplyStylesOnApplication property of SfSkinManager in source level.
Customer has faced the reported issue only when apply the theme in both designer and code behind. If we apply the theme only once everything works fine.
1.Start the attached application
2.Note that title bar becomes black on applying StylesOnApplication property as true.
Expected result: No title bar should occur while setting StylesOnApplication property.