We had a very critical BUG in our game.
Each time we play more than 7 maps(random maps not a specific map) the shadow layer disappears, then if we play more the wall layer disappears, and even the interface layer disappears(note that mechanics, colliders all that worked fine, just the visual part disappeared). We were in an insane mode because we would not find the source, the programmer(Sergey D.) optimized the code and searched for memory leaks but nothing made sense. And in order to be able to play again, we had to exit the game entirely and enter gain
And finally, he fixed it, this bug was from almost the beginning of development.
The solution was to remove the map editor from the game and create a separate exe for the editor.
In the future, we will need to decide if we polish the editor to include it in the full release or to add it later as DLC.
Opinions about editor release?
For me in steamwork = bad idea. I will not dowload it for sure and it seem obvious that lot's of people interested by an editor like me will not search to dowload him in standalone. BUT it's best to focus on the main game, release him well done and LATER in a major update add an ingame editor with a place/site/itchio-page where share campaigns.
On an other hand, having the editor ingame to the first release simply make him better, the question are does it take a lot of time to make a clear editor ? if the answer are yes but that you are able to wait a little longer, so do it. Otherwise in an later update seem the best idea.