Consider in Entity.equals: Different tenants may have an entity with same Id

src/Volo.Abp.Ddd/Volo/Abp/Domain/Entities/Entity.cs

@@ -1,4 +1,6 @@
-using System.Reflection;
+using System;
+using System.Reflection;
+using Volo.Abp.MultiTenancy;
 
 namespace Volo.Abp.Domain.Entities
 {
@@ -47,6 +49,13 @@ namespace Volo.Abp.Domain.Entities
                 return false;
             }
 
+            //Different tenants may have an entity with same Id.
+            if (this is IMultiTenant && other is IMultiTenant &&
+                this.As<IMultiTenant>().TenantId != other.As<IMultiTenant>().TenantId)
+            {
+                return false;
+            }
+
             return Id.Equals(other.Id);
         }
 

test/Volo.Abp.MultiTenancy.Application.Tests/Volo/Abp/MultiTenancy/AbpIdentityApplicationTestBase.cs → test/Volo.Abp.MultiTenancy.Application.Tests/Volo/Abp/MultiTenancy/AbpMultiTenancyApplicationTestBase.cs

@@ -3,7 +3,7 @@ using Volo.Abp.MultiTenancy.EntityFrameworkCore;
 
 namespace Volo.Abp.MultiTenancy
 {
-    public class AbpMultiTenancyApplicationTestBase : AbpIntegratedTest<AbpMultiTenancyApplicationTestModule>
+    public abstract class AbpMultiTenancyApplicationTestBase : AbpIntegratedTest<AbpMultiTenancyApplicationTestModule>
     {
         protected override void SetAbpApplicationCreationOptions(AbpApplicationCreationOptions options)
         {