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SfDataGrid crashes on initialization when Theme is applied

When using Theme in ResourceDictionary accordingly to documentation, sfDataGrid crashes application. Dark or light theme, with or without binding to data, doesn't matter, grid crashes . I have tried grid with own DataGridStyle and still crashes.

Tested with Xam 3.4 and 3.6, Sf 17.0.1.38, uwp and android

app.xaml:

xmlns:syncTheme="clr-namespace:Syncfusion.XForms.Themes;assembly=Syncfusion.Core.XForms"

    <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <syncTheme:SyncfusionThemeDictionary>
                    <syncTheme:SyncfusionThemeDictionary.MergedDictionaries>
                        <syncTheme:DarkTheme />
                    </syncTheme:SyncfusionThemeDictionary.MergedDictionaries>
                </syncTheme:SyncfusionThemeDictionary>

Exception:

{System.NullReferenceException: Object reference not set to an instance of an object.
   at Syncfusion.SfDataGrid.XForms.ThemeGridStyle.OnDataGridBackgroundColorChanged(BindableObject bindable, Object oldValue, Object newValue)
   at Xamarin.Forms.BindableObject.SetValueActual(BindableProperty property, BindablePropertyContext context, Object value, Boolean currentlyApplying, SetValueFlags attributes, Boolean silent)
   at Xamarin.Forms.BindableObject.SetValueCore(BindableProperty property, Object value, SetValueFlags attributes, SetValuePrivateFlags privateAttributes)
   at Xamarin.Forms.Element.OnSetDynamicResource(BindableProperty property, String key)
   at Xamarin.Forms.BindableObject.SetDynamicResource(BindableProperty property, String key, Boolean fromStyle)
   at Syncfusion.SfDataGrid.XForms.ThemeGridStyle..ctor()
   at Syncfusion.SfDataGrid.XForms.SfDataGrid.Syncfusion.XForms.Themes.IThemeElement.OnControlThemeChanged(String oldTheme, String newTheme)
   at Syncfusion.XForms.Themes.ThemeElement.OnControlThemeChanged(BindableObject bindable, Object oldValue, Object newValue)
   at Xamarin.Forms.BindableObject.SetValueActual(BindableProperty property, BindablePropertyContext context, Object value, Boolean currentlyApplying, SetValueFlags attributes, Boolean silent)
   at Xamarin.Forms.BindableObject.SetValueCore(BindableProperty property, Object value, SetValueFlags attributes, SetValuePrivateFlags privateAttributes)
   at Xamarin.Forms.Element.OnSetDynamicResource(BindableProperty property, String key)
   at Xamarin.Forms.BindableObject.SetDynamicResource(BindableProperty property, String key, Boolean fromStyle)
   at Xamarin.Forms.Element.SetDynamicResource(BindableProperty property, String key)
   at Syncfusion.XForms.Themes.ThemeElement.InitializeThemeResources(Element element, String controlKey)
   at Syncfusion.SfDataGrid.XForms.SfDataGrid..ctor()
   at sfThemingTest.Views.GridPage.InitializeComponent()
   at sfThemingTest.Views.GridPage..ctor()
   at sfThemingTest.Views.MainPage.<NavigateFromMenu>d__2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   at sfThemingTest.Views.MenuPage.<<-ctor>b__3_0>d.MoveNext()}