MainKt run function opens invisible window.

[willemml]

When run in the dev environment an invisible window called MainKt is opened, this probably shouldn't happen as it is annoying while testing due to focus switches. (using macOS)

[5HT2]

This doesn't happen on Linux. Sounds like an issue specific to your environment. Send a screenshot of your run configuration.

[willemml]

I am assuming you mean the IntelliJ Idea one so here it is, I also tested, and this only happens in dev env, running java -jar does not do this.

[5HT2]

Doesn't happen to me, and it shouldn't. I'm going to close this as it's probably an Intellij IDEA bug

[willemml]

This is actually not an IDE bug, I just tested, my cli java is set to 14, if I use java 8 in cli then it opens the window.

[5HT2]

That's a Kotlin bug or something to do with how it launches binaries then.