Yeelight RGB : issue with automation and Mi home 5.1.5

Hello !

After investigations, this issue only occurs with MI HOME V.5.1.5. There is no issue with 5.1.1.
China mainland and english language. I live in France.

I own a few xiaomi items : yeelight RGB, wireless switch, gateway, sensor…

I didn’t have any issue with automation in general until now. I used to program some scenarios very easily but I suddenly had a trouble with special scenes, let me explain :

When I use a wireless button to control a RGB yeelight for classic operations, like ON/OFF, change luminosity etc… It works great.
When I try to program my button to launch one of the scene, like sunrise, sunset, birthday, or one of the colors of my favourite, that does not work. I choose “sunset” => " apply ", nothing happens… The scene is not even created : the line " DO … " remains empty.

I already have a " sunset " programmed on a wireless button which still works. But If I remove it, I won’t be able to recreate it.

This is definitively a software issue, as it only occurs with Mi home 5.1.5, not 5.1.1. I’ve uninstalled MI home and installed it on my PC with bluestacks, the issue remains.

Thank you !