devtools-closed event does not fire

[darkf]

NWJS Version : 0.30.4
Operating System : Windows 8.1

Expected behavior

The devtools-closed event should fire, and the main window should be closed.

Actual behavior

Nothing happens, and nothing is printed.

How to reproduce

Run this, and then close the devtools window:

<script>
const win = nw.Window.get();

win.on("devtools-closed", () => {
    console.log("closing");
    win.close();
});

win.showDevTools();
</script>

[Christywl]

I can reproduce this issue on Linux/Windows with nwjs-sdk-v0.30.4.

[sysrage]

@rogerwang This issue is still present with 0.77.0. Can it be fixed?