.net 8.0 - Client injection exception after upgrading MassTransit from 8.3.3 to 8.3.5 - Stack Overflow

I have upgraded MassTransit in my project from 8.3.3 to 8.3.5 without modifying any configuration, and I am getting following exception when trying to inject the IRequestClient<>:

MassTransit.MassTransitException: Unable to resolve client factory or mediator for request client: <MyRequestTye>
   at MassTransit.DependencyInjection.GenericRequestClient`1.GetRequestClient(IServiceProvider provider) in /_/src/MassTransit/DependencyInjection/DependencyInjection/GenericRequestClient.cs:line 137
   at MassTransit.DependencyInjection.GenericRequestClient`1..ctor(IServiceProvider provider) in /_/src/MassTransit/DependencyInjection/DependencyInjection/GenericRequestClient.cs:line 18

As I upgraded several packages simultaneously, I reverted just this one back to 8.3.3, and it works as before.

this is my configuration code:

builder.Services.AddMassTransit<TBus>(x =>
{
    var opts = builder.Configuration.GetRequiredSection(key).Get<RabbitMQOptions>() ?? throw new ConfigurationException($"Configuration key '{key}' of type '{nameof(RabbitMQOptions)}' missing!");

    foreach (var consumer in consumers)
    {
        x.AddConsumer(consumer);
    }

    foreach (var request in requestTypes)
    {
        x.AddRequestClient(request);
    }

    x.UsingRabbitMq((context, cfg) =>
    {
        cfg.Host(opts.Host, opts.Port, bus, builder.Environment.ApplicationName, h =>
        {
            h.Username(opts.UserName);
            h.Password(opts.Password);
            h.Heartbeat(30);
        });

        cfg.ConfigureJsonSerializerOptions(options => options
            .AddConvertersFrom(CustomJsonSerializationOptions.ContractOptions)
            .ConfigureForNodaTime(DateTimeZoneProviders.Tzdb)
            );

        cfg.ConfigureEndpoints(context, new KebabCaseEndpointNameFormatter(bus, false));
    });
});

I don't see anything in this post that should have this effect: