My Windows installed Itellij IDEA can't reach JDK from Ubuntu (Ubuntu installed on WSL). Durning running app, I got this problem:

And I can not reach \$wsl in Windows run (Start button + r).
My Windows installed Itellij IDEA can't reach JDK from Ubuntu (Ubuntu installed on WSL). Durning running app, I got this problem:

And I can not reach \$wsl in Windows run (Start button + r).
UPDATE: WSL is now supported and it should work just fine out of the box.
Original answer from 2020:
IntelliJ IDEA has no support for the WSL JDK on Windows at the moment. Please use the locally installed JDK for Windows instead.