how to trigger addon shortcut by keypress

[meyergin]

I use camoufox in ubuntu linux,
after applying singlefile addon at camoufox, i tried to trigger it to save the page by pressing ( ctrl+shift+y ), my first thought was shortcut is conflicted with default firefox "open downloads". So I changed the shortcut to ( ctrl+shift+f ), but it still cannot trigger the event
I have monitored the browser event and the browser got the press event, but seems cannot be trigger by addon, while actual keyboard stroke works
here's my code:

with Camoufox(
    os="windows", headless="virtual", addons=["/extension/single_file/"]
) as browser:
    page = browser.new_page()
    page.goto(url_to_save, wait_until="networkidle", timeout=60000)
    page.evaluate("""
            ['keydown', 'keyup', 'keypress'].forEach(eventType => {
                document.addEventListener(eventType, (e) => {
                    console.log(`${eventType}:`, {
                        key: e.key,
                        code: e.code,
                        keyCode: e.keyCode,
                        ctrlKey: e.ctrlKey,
                        shiftKey: e.shiftKey,
                        isTrusted: e.isTrusted,
                        target: e.target.tagName
                    });
                }, true);
            });
        """)

    time.sleep(0.5)

    page.keyboard.press("Control+Shift+f")