core: MQTT sensors unavailable in 0.114.0bx, others stay unknown

The problem

A lot of my MQTT sensors are unavailable after a restart. The solution to get them back is to delete the entity, and resend the discovery message.

Environment

• Home Assistant Core release with the issue: 0.114.0b0 and 0.114.0b2
• Last working Home Assistant Core release (if known): 0.113.3
• Operating environment (OS/Container/Supervised/Core): Supervised
• Integration causing this issue: MQTT
• Link to integration documentation on our website: https://www.home-assistant.io/integrations/mqtt/

Problem-relevant configuration.yaml

No yaml, but an example of a discovery message :

topic :

homeassistant/binary_sensor/sensorvoordeur/config

Discovery message :

{"name": "voordeur", "device_class": "door", "state_topic": "sensor/voordeur", "unique_id": "voordeur", "device": {"identifiers": ["voordeur"],"name": "voordeur", "model": "Digoo door sensor", "manufacturer": "Digoo"}}

Many Tasmota devices stay ‘unknown’

Traceback/Error logs

Nothing relevant in the log

Additional information

Both point to the same mqtt broker (on a separate machine)

0.114.0b2

https://img.techpowerup.org/200808/01140b2.png [IMG]https://img.techpowerup.org/200808/01140b2.png[/IMG]

0.113.3

https://img.techpowerup.org/200808/01133.png [IMG]https://img.techpowerup.org/200808/01133.png[/IMG]