core: AlarmDecoder integration zones stops working after few minutes - started after 2020.12 upgrade

The problem

AlarmDecoder doesn’t get zone alarms after latest update to hassos and hassio core. I am using RPI3 hassos. It worked fine with 0,118 release and after the upgrade, I get a few zone updates at startup (door open/close) etc. But in a few minutes, I don’t see any updates (e.g. entities don’t show as open/close etc). I know that panel, USB device, ser2sock is working because a separate node-red container (running on a different host) continues to receive zone open/close messages.

Environment

System Health

version	2020.12.0
installation_type	Home Assistant OS
dev	false
hassio	true
docker	true
virtualenv	false
python_version	3.8.6
os_name	Linux
os_version	5.4.79-v7
arch	armv7l
timezone	America/New_York

Home Assistant Cloud

logged_in	false
can_reach_cert_server	ok
can_reach_cloud_auth	ok
can_reach_cloud	ok

Hass.io

host_os	Home Assistant OS 5.8
update_channel	stable
supervisor_version	2020.12.6
docker_version	19.03.13
disk_total	58.0 GB
disk_used	4.9 GB
healthy	true
supported	true
board	rpi3
supervisor_api	ok
version_api	ok
installed_addons	SSH & Web Terminal (7.8.0), Terminal & SSH (8.10.0), Grafana (5.3.6), Lutron Certificate (0.6.0), Check Home Assistant configuration (3.6.0), Portainer (1.3.0)

Lovelace

dashboards	1
mode	storage
views	4
resources	0

- Home Assistant Core release with the issue: - Last working Home Assistant Core release (if known): 0.118 - Operating environment (OS/Container/Supervised/Core): HASSOS - Integration causing this issue: AlarmDecoder - Link to integration documentation on our website: https://www.home-assistant.io/integrations/alarmdecoder

Problem-relevant configuration.yaml

Traceback/Error logs

Additional information