efcore: Batched query breaks after upgrade to 7.0 - The UPDATE statement conflicted with the FOREIGN KEY constraint

After upgrading to version 7.0 of EntityFramework, we are encountering an error. The error thrown is The UPDATE statement conflicted with the FOREIGN KEY constraint.

Minimal extract from actual code:

foreach (var salesOrder in salesOrders)
{
    var delivery = new Delivery
    {
        AddressId = salesOrder.ShippingAddressId,
	CustomerName = salesOrder.Name,
	DeliveryDate = date,
	Position = -1,
	Route = route,
	TimeslotEnd = deliveryDay?.DeliveryTo,
	TimeslotStart = deliveryDay?.DeliveryFrom
    };

    Context.Deliveries.Add(delivery);

    // add reference from PackingSlip to Delivery
    if (source == ConfigureDeliverySource.PackingSlips)
    {
 	var packingSlip = packingSlips.First(p => salesOrder.PackingSlipNumber == p.Number);
	delivery.PackingSlips.Add(packingSlip);
   }
}

await Context.SaveChangesAsync().ConfigureAwait(false);

This works OK as long as there are only a few Delivery entities to insert, however, after 42 entities, EF creates multiple inserts, and that’s when it apparently goes wrong. When it subsequently tries to update the PackingSlip entities to set the DeliveryId reference, there is now an incorrect reference (see @p651):

[Parameters=[@p652='1054315', @p651='-2147482352' (Nullable = true), @p654='1054316', @p653='283504' (Nullable = true), @p656='1054317', @p655='283505' (Nullable = true), @p658='1054318', @p657='283505' (Nullable = true), @p660='1054319', @p659='283504' (Nullable = true), @p662='1054320', @p661='283504' (Nullable = true), @p664='1054321', @p663='283504' (Nullable = true), @p666='1054322', @p665='283504' (Nullable = true), @p668='1054323', @p667='283504' (Nullable = true), @p670='1054324', @p669='283504' (Nullable = true), @p672='1054325', @p671='283504' (Nullable = true), @p674='1054326', @p673='283504' (Nullable = true), @p676='1054327', @p675='283504' (Nullable = true), @p678='1054328', @p677='283504' (Nullable = true), @p680='1054329', @p679='283504' (Nullable = true), @p682='1054330', @p681='283504' (Nullable = true), @p684='1054331', @p683='283504' (Nullable = true), @p686='1054332', @p685='283504' (Nullable = true), @p688='1054333', @p687='283504' (Nullable = true), @p690='1054334', @p689='283504' (Nullable = true), @p692='1054335', @p691='283504' (Nullable = true), @p694='1054336', @p693='283504' (Nullable = true), @p696='1054337', @p695='283504' (Nullable = true), @p698='1054338', @p697='283504' (Nullable = true), @p700='1054339', @p699='283506' (Nullable = true), @p702='1054340', @p701='283506' (Nullable = true), @p704='1054341', @p703='283506' (Nullable = true), @p706='1054342', @p705='283507' (Nullable = true), @p708='1054343', @p707='283508' (Nullable = true), @p710='1054344', @p709='283509' (Nullable = true), @p712='1054345', @p711='283509' (Nullable = true), @p714='1054346', @p713='283509' (Nullable = true), @p716='1054347', @p715='283509' (Nullable = true), @p718='1054348', @p717='283509' (Nullable = true), @p720='1054349', @p719='283509' (Nullable = true), @p722='1054350', @p721='283509' (Nullable = true), @p724='1054351', @p723='283509' (Nullable = true), @p726='1054352', @p725='283510' (Nullable = true), @p728='1054353', @p727='283511' (Nullable = true), @p730='1054354', @p729='283512' (Nullable = true), @p732='1054355', @p731='283513' (Nullable = true), @p734='1054356', @p733='283514' (Nullable = true)], CommandType='Text', CommandTimeout='300']
      SET NOCOUNT ON;
      UPDATE [PackingSlips] SET [DeliveryId] = @p651
      OUTPUT INSERTED.[Checksum]
      WHERE [PackingSlipId] = @p652;
      UPDATE [PackingSlips] SET [DeliveryId] = @p653
      OUTPUT INSERTED.[Checksum]
      WHERE [PackingSlipId] = @p654;
     
     // shortened for brevity

Include provider and version information

EF Core version: 7.0.0 Database provider: Microsoft.EntityFrameworkCore.SqlServer Target framework: net7.0 Operating system: Windows 11 IDE: Visual Studio 2022 17.4