The Webhook integration format does not contains the gateway list. This can impact running applications like mapper and tracking systems using triangulation.
Is that because of the bridge between v2 and v3 ? will it be back once the gateways will be migrated to v3?
That is correct, anything routed via a V2 gateway will appear as “packetbroker” - there are various discussions else where on this topic as yes, it does rather break the TTN Mapper.
As I understand it, it’s not a trivial change so the engineering impact needs to be figured out.