At-most-once guarantee is broken

[AqlaSolutions]

According to the docs, protoactor guarantees delivery no more than once but when I debug grain method the debugger pauses cause timeout on client side and it resends the same request multiple times. The guarantee is broken and we can't rely on that messages will not be duplicated by the transport.

[rogeralsing]

According to the docs, protoactor guarantees delivery no more than once

No, there is no such guarantee for grains.

plain actors, yes.
related to: #1978 (comment)

Grains have different guarantees from plain actors in terms of ordering and delivery.

[AqlaSolutions]

So it means "delivered any number of times". This difference between grains and actors should be documented.