Connection URL not updated

I´m using v1.2 and discovered a problem where connection to CPE´s get lost after a while. CPE´s are renewing the IP address and keep sending periodic informs but acs is not replacing the new connection URL. After deleting the CPE it becomes reachable after the first periodic inform again. Don´t know how to troubleshoot this. Is there anything I can do?

CPE traffic is forwarded from nginx proxy.

Another CPE does not changed IP address and do answer on connection requests but acs is not updating last Inform and in GUI I only get “Not contact from device”

debug.yml:
https://paste.ccgmbh.net/paste/pZQStQyz#S0qisYXQtS3bXTxbMEky9EGo4MLp7DPkMtjByIvi4F1

Can you test this against the latest master branch?

That fixed the problem, thank you very much.