Drag and Drop on GridView fails in desktop application with WinUI Xaml Islands

[smk2007]

Describe the bug
Cannot use Drag and Drop in GridView.

Steps to reproduce the bug
Build a XAML UserControl and embed into a native Desktop application.
Add a GridView and enable drag and drop functionality:

    <GridView x:Name="test_grid" Width="300" Height="90" **CanReorderItems="True" AllowDrop="True" CanDrag="True"**>
        <GridView.ItemTemplate>
            <DataTemplate x:DataType="local:debug_chrome_grid_item">
                <Grid Background="{x:Bind Color, Mode=OneWay}" Width="30" Height="30">
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="30"/>
                    </Grid.ColumnDefinitions>
                    <TextBlock Text="{x:Bind name, Mode=OneWay}" Foreground="Red" FontSize="14" Grid.Column="0" VerticalAlignment="Center"/>
                </Grid>
            </DataTemplate>
        </GridView.ItemTemplate>
    </GridView>

Run the program, and you will see the GridView. Then attempt to drag and drop.

Expected: No Error.

Actual:
[Inline Frame] Microsoft.UI.Xaml.dll!DirectUI::DXamlCore::EnsureDragDrop() Line 996
at E:\BA\57\s\dxaml\xcp\dxaml\lib\DXamlCore.cpp(996)
[Inline Frame] Microsoft.UI.Xaml.dll!DirectUI::DXamlCore::GetDragDrop() Line 368
at E:\BA\57\s\dxaml\xcp\dxaml\lib\DXamlCore.h(368)
Microsoft.UI.Xaml.dll!DirectUI::ListViewBase::OnDragGesture::__l118::(ABI::Windows::Foundation::IAsyncOperation * pAsyncOp, ABI::Windows::Foundation::AsyncStatus status) Line 176
at E:\BA\57\s\dxaml\xcp\dxaml\lib\ListViewBase_Partial_Reorder.cpp(176)
Microsoft.UI.Xaml.dll!Microsoft::WRL::AsyncBase<ABI::Windows::Foundation::IAsyncOperationCompletedHandler,Microsoft::WRL::Details::Nil,1,Microsoft::WRL::AsyncOptions<2,0,&GUID_NULL,0>>::FireCompletion() Line 769
at E:\BA\57\s\packages\Microsoft.Windows.SDK.cpp.10.0.18362.2004-preview\c\Include\10.0.18362.0\winrt\wrl\async.h(769)
Microsoft.UI.Xaml.dll!DirectUI::StartDragAsyncOperation::StartIfNeededImpl::__l5::(ABI::Windows::Foundation::IAsyncOperation * asyncOp, ABI::Windows::Foundation::AsyncStatus status) Line 134
at E:\BA\57\s\dxaml\xcp\dxaml\lib\StartDragAsyncOperation.cpp(134)
rpcrt4.dll!Invoke�()
rpcrt4.dll!NdrStubCall2()
rpcrt4.dll!NdrStubCall3()
combase.dll!CStdStubBuffer_Invoke(IRpcStubBuffer * This, tagRPCOLEMESSAGE * prpcmsg, IRpcChannelBuffer * pRpcChannelBuffer) Line 1458
at onecore\com\combase\ndr\ndrole\stub.cxx(1458)
rpcrt4.dll!CStdStubBuffer_Invoke()
[Inline Frame] combase.dll!InvokeStubWithExceptionPolicyAndTracing::__l6::<lambda_c9f3956a20c9da92a64affc24fdd69ec>::operator()() Line 1279
at onecore\com\combase\dcomrem\channelb.cxx(1279)
combase.dll!ObjectMethodExceptionHandlingAction<<lambda_c9f3956a20c9da92a64affc24fdd69ec>>(InvokeStubWithExceptionPolicyAndTracing::__l6::<lambda_c9f3956a20c9da92a64affc24fdd69ec> action, ObjectMethodExceptionHandlingInfo * pExceptionHandlingInfo, ExceptionHandlingResult * pExceptionHandlingResult, void *) Line 87
at onecore\com\combase\dcomrem\excepn.hxx(87)
[Inline Frame] combase.dll!InvokeStubWithExceptionPolicyAndTracing(IRpcStubBuffer * pMsg, tagRPCOLEMESSAGE *) Line 1277
at onecore\com\combase\dcomrem\channelb.cxx(1277)
combase.dll!DefaultStubInvoke(bool bIsAsyncBeginMethod, IServerCall * pServerCall, IRpcChannelBuffer * pChannel, IRpcStubBuffer * pStub, unsigned long * pdwFault) Line 1346
at onecore\com\combase\dcomrem\channelb.cxx(1346)
[Inline Frame] combase.dll!SyncStubCall::Invoke(IServerCall *) Line 1403
at onecore\com\combase\dcomrem\channelb.cxx(1403)
combase.dll!SyncServerCall::StubInvoke(IRpcChannelBuffer * pChannel, IRpcStubBuffer * pStub, unsigned long * pdwFault) Line 781
at onecore\com\combase\dcomrem\ServerCall.hpp(781)
[Inline Frame] combase.dll!StubInvoke(tagRPCOLEMESSAGE * pMsg, CStdIdentity * pStdID, IRpcStubBuffer *) Line 1628
at onecore\com\combase\dcomrem\channelb.cxx(1628)
combase.dll!ServerCall::ContextInvoke(tagRPCOLEMESSAGE * pMessage, IRpcStubBuffer * pStub, CServerChannel * pChannel, tagIPIDEntry * pIPIDEntry, unsigned long * pdwFault) Line 1423
at onecore\com\combase\dcomrem\ctxchnl.cxx(1423)
[Inline Frame] combase.dll!CServerChannel::ContextInvoke(tagRPCOLEMESSAGE *) Line 1332
at onecore\com\combase\dcomrem\ctxchnl.cxx(1332)
combase.dll!DefaultInvokeInApartment(tagRPCOLEMESSAGE * pMsg, unsigned long CallCatIn, bool bIsTouchedASTACall, IRpcStubBuffer * pStub, CServerChannel * pChnl, tagIPIDEntry * pIPIDEntry, unsigned long * pdwFault) Line 3299
at onecore\com\combase\dcomrem\callctrl.cxx(3299)
[Inline Frame] combase.dll!AppInvoke(ServerCall * pStub, CServerChannel *) Line 1122
at onecore\com\combase\dcomrem\channelb.cxx(1122)
combase.dll!ComInvokeWithLockAndIPID(ServerCall * pServerCall, tagIPIDEntry * pIPIDEntry, bool * pbCallerResponsibleForRequestMessageCleanup) Line 2210
at onecore\com\combase\dcomrem\channelb.cxx(2210)
combase.dll!ThreadInvokeWorker(_RPC_MESSAGE * pMessage) Line 7016
at onecore\com\combase\dcomrem\channelb.cxx(7016)
combase.dll!ThreadInvoke(_RPC_MESSAGE * message) Line 7152
at onecore\com\combase\dcomrem\channelb.cxx(7152)
rpcrt4.dll!DispatchToStubInCNoAvrf�()
rpcrt4.dll!RPC_INTERFACE::DispatchToStubWorker()
rpcrt4.dll!RPC_INTERFACE::DispatchToStubWithObject()
rpcrt4.dll!LRPC_SCALL::DispatchRequest()
rpcrt4.dll!LRPC_SCALL::HandleRequest(struct _PORT_MESSAGE *,struct _PORT_MESSAGE *,void *,unsigned __int64,class RPCP_ALPC_HANDLE_ATTR *)
rpcrt4.dll!LRPC_ADDRESS::HandleRequest()
rpcrt4.dll!LRPC_ADDRESS::ProcessIO(void *)
rpcrt4.dll!LrpcIoComplete()
ntdll.dll!TppAlpcpExecuteCallback()
ntdll.dll!TppWorkerThread()
kernel32.dll!BaseThreadInitThunk�()
ntdll.dll!RtlUserThreadStart�()

Expected behavior
Drag and Drop works on GridView.

Screenshots

Version Info
Microsoft.WinUI.3.0.0-preview2.200713.0
Windows 10 Version: 19041

NuGet package version:
Microsoft.WinUI.3.0.0-preview2.200713.0

Windows app type:

UWP	Win32
	Yes

Windows 10 version	Saw the problem?
Insider Build (xxxxx)
May 2020 Update (19041)	Yes
November 2019 Update (18363)
May 2019 Update (18362)
October 2018 Update (17763)
April 2018 Update (17134)
Fall Creators Update (16299)
Creators Update (15063)

Device form factor	Saw the problem?
Desktop	Yes
Xbox
Surface Hub
IoT

Additional context

[smk2007]

Same issue with simpler XAML that works fine on UWP:

    <GridView MaxHeight="310" AllowDrop="True" CanReorderItems="True">
        <Rectangle Height="100" Width="100" Fill="Blue" />
        <Rectangle Height="100" Width="100" Fill="Red" />
        <Rectangle Height="100" Width="100" Fill="Green" />
    </GridView>

[StephenLPeters]

@jevansaks FYI, I think you did some work in this space?

[anawishnoff]

This bug has been fixed, and the fix will be available in our next release - WinUI 3 Preview 4. We're hoping to ship this preview release in early February. Thanks!