removeAllListeners doesn't seem to remove listeners (NW2)

[DjulLau]

NWJS Version : 0.49.0
Operating System : Windows 10

I recently tried upgrading my app from v0.28 to v0.49.
In this app I open a second window behind the main window to do some capture.
I listen to the 'loaded' event on the window to wait before doing the capture.
Then I call removeAllListeners('loaded') to stop listening to this event but I still receive the event with new version after that.

Expected behavior

Should not receive 'loaded' event after calling removeAllListeners('loaded')

Actual behavior

'loaded' event still received after calling removeAllListeners('loaded')

How to reproduce

    require("nw.gui").Window.open("new.html", {}, (wnd) => {
        wnd.on("loaded", (e) => {
            console.debug("loaded");
            
            wnd.removeAllListeners("loaded");
            console.debug("new load");
            wnd.window.location.href = "new.html";
        });
    });

Output

loaded
new load
loaded
new load
loaded
new load
loaded
new load
...

• Add "chromium-args": "--disable-features=nw2"
• Run again
  Output

loaded
new load

Workaround

Use window.once('loaded') instead of window.on('loaded').

[DjulLau]

CC #7230

[rogerwang]

This is fixed in git and will be available in the next nightly build.