Advance Message Context is null when message is received

[AGranosik]

Hello!
I started using RawRabbit and everything worked fine until now.
I want to requeue messages in case of failure like described here:
https://rawrabbit.readthedocs.io/en/master/Delayed-requeue-of-messages.html

Configuration
services.AddSingleton<IBusClient<AdvancedMessageContext>>(client);

And subscription
client.SubscribeAsync<T>(async (msg, context) => // context is null here)
so I cannot use: context.RetryLater(TimeSpan.FromMinutes(5));

Is there anything that i miss during configuration?