RAK7249 - Problem automatic data recovery to ChirpStack

Good morning all,

I recently own a RAK7249 gateway which sends in UDP to my chirpstack server. In the packet forwader settings, there is the automatic data recovery option which is enabled so as not to lose any data. So I carried out a test, 3 frames were buffered but when the connection comes back it is the last packet saved in buffer which is displayed on chirpstack.

What is the problem?

The latest version of chirpstack is installed as well as the latest update of the gateway

Thank you in advance for your help