YOKIS MTV300E-UP cannot set brightness

[musapinar]

What happened?

Can't set brightness via mqtt. Values set above 200 and below 60 seem ok. But anything inbetween saves wrong values.

What did you expect to happen?

When i set brightness to 90 via mqtt, I expect "light.televariateur_salle_a_manger" to be 90, not 230.
When i set brightness to 110, i expect it to be 110, not 240.

How to reproduce it (minimal and precise)

• Add device YOKIS MTV300E-UP
• Rename device to "televariateur_salle_a_manger"
• Verify you have entity "light.televariateur_salle_a_manger"
• Send this via mqtt to topic zigbee2mqtt/televariateur_salle_a_manger/set

{
  "brightness": 110
}

• Send again changing brightness to 90
• Send again some brightness values around 100, say between 70 and 130, a few time

At some point, it will not save the desired value into "light.televariateur_salle_a_manger", but erratic values, like 220.
It is not a matter of spamming/dos'ing the bus. Take your time to send the commands. Anything around brightness 100 produces wrong values to be saved, like one time out of three.

Zigbee2MQTT version

2.0.0

Adapter firmware version

20240710

Adapter

zStack3x0

Setup

haos addon, running on oracle vm

Debug log

none

[musapinar]

Also the set values do "drift". When I set brightness to 150, it save 151.
The key to reproduce the issue is to cross the brightness 100 threshold I think. Do 130, then 80, back and forth. etc.