Entity Framework Role Manager error

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Thank you for the suggestion. I appreciate the help. What I ended up doing was registering a custom ValueGenerator which returns the next index (not random, though, consecutive one):

public class CustomIdentityRoleClaimIdValueGenerator : ValueGenerator<int>
{
    public override bool GeneratesTemporaryValues => false;

    public override int Next(EntityEntry entry)
    {
        var currInd = entry.Context.Set<IdentityRoleClaim<string>>().Count();

        return currInd + 1;
    }
}

Registration code in DbContext implementation inside OnModelCreating() method:

builder.Entity< IdentityRoleClaim<string> >().Property(m => m.Id).HasValueGenerator<CustomIdentityRoleClaimIdValueGenerator>();

This seems to solve the issue. However, I am trying to utilize UserManager.GetClaimsAsync(TUser user) method and getting the exception:

MongoDB.Driver.Linq.ExpressionNotSupportedException: Expression not supported: i.ToClaim().

If I understand this correctly, the UserManager.GetClaimsAsync() is not supported by the Mongo EF Core DB provider. Or is there any way to bypass this limitation? Thank you very much in advance!

The full stack trace is:

 [Microsoft.EntityFrameworkCore.Query] An exception occurred while iterating over the results of a query for context type '"NextGenHMI.Core.Libraries.AAA.Data.ApplicationDbContext"'."\r\n""MongoDB.Driver.Linq.ExpressionNotSupportedException: Expression not supported: i.ToClaim().\r\n   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToAggregationExpressionTranslators.MethodCallExpressionToAggregationExpressionTranslator.Translate(TranslationContext context, MethodCallExpression expression)\r\n   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToAggregationExpressionTranslators.ExpressionToAggregationExpressionTranslator.Translate(TranslationContext context, Expression expression)\r\n   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToAggregationExpressionTranslators.ExpressionToAggregationExpressionTranslator.TranslateLambdaBody(TranslationContext context, LambdaExpression lambdaExpression, IBsonSerializer parameterSerializer, Boolean asRoot)\r\n   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToPipelineTranslators.SelectMethodToPipelineTranslator.Translate(TranslationContext context, MethodCallExpression expression)\r\n   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToPipelineTranslators.ExpressionToPipelineTranslator.Translate(TranslationContext context, Expression expression)\r\n   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToExecutableQueryTranslators.ExpressionToExecutableQueryTranslator.Translate[TDocument,TOutput](MongoQueryProvider`1 provider, Expression expression)\r\n   at MongoDB.Driver.Linq.Linq3Implementation.MongoQuery`2.Execute()\r\n   at MongoDB.Driver.Linq.Linq3Implementation.MongoQuery`2.GetEnumerator()\r\n   at MongoDB.EntityFrameworkCore.Query.QueryingEnumerable`2.Enumerator.MoveNextHelper()\r\n   at MongoDB.EntityFrameworkCore.Query.QueryingEnumerable`2.Enumerator.MoveNextAsync()"
MongoDB.Driver.Linq.ExpressionNotSupportedException: Expression not supported: i.ToClaim().
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToAggregationExpressionTranslators.MethodCallExpressionToAggregationExpressionTranslator.Translate(TranslationContext context, MethodCallExpression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToAggregationExpressionTranslators.ExpressionToAggregationExpressionTranslator.Translate(TranslationContext context, Expression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToAggregationExpressionTranslators.ExpressionToAggregationExpressionTranslator.TranslateLambdaBody(TranslationContext context, LambdaExpression lambdaExpression, IBsonSerializer parameterSerializer, Boolean asRoot)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToPipelineTranslators.SelectMethodToPipelineTranslator.Translate(TranslationContext context, MethodCallExpression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToPipelineTranslators.ExpressionToPipelineTranslator.Translate(TranslationContext context, Expression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToExecutableQueryTranslators.ExpressionToExecutableQueryTranslator.Translate[TDocument,TOutput](MongoQueryProvider`1 provider, Expression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.MongoQuery`2.Execute()
   at MongoDB.Driver.Linq.Linq3Implementation.MongoQuery`2.GetEnumerator()
   at MongoDB.EntityFrameworkCore.Query.QueryingEnumerable`2.Enumerator.MoveNextHelper()
   at MongoDB.EntityFrameworkCore.Query.QueryingEnumerable`2.Enumerator.MoveNextAsync()
   at System.Runtime.CompilerServices.ConfiguredCancelableAsyncEnumerable`1.Enumerator.MoveNextAsync()
   at Microsoft.EntityFrameworkCore.EntityFrameworkQueryableExtensions.ToListAsync[TSource](IQueryable`1 source, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.EntityFrameworkQueryableExtensions.ToListAsync[TSource](IQueryable`1 source, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.Identity.EntityFrameworkCore.UserStore`9.GetClaimsAsync(TUser user, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.Identity.UserManager`1.GetClaimsAsync(TUser user)