I post this here, as a similar post on HA github issues page was closed with no ability to post comments.
I think the newly introduced scene editor is good as a missing feature, which was introduced, but the way it works makes me think it’s buggy.
Every time I edit a scene the scene is launched. I don’t think it’s the way it should work. Why would anyone want this? I don’t want my home to go crazy and flash lights, open/close covers just because I went into scene edit mode. I want to decide on that when I want to test it.
Perhaps the current behavior was chosen as it was the simplest way to implement it (entities are really set with the state from the scene, so no need to have some “virtual” entities), but I think this must change.
This issue was described on Github: https://github.com/home-assistant/home-assistant/issues/28952