Test: Press Prtscr key

Microsoft Edge (Including Internet Explorer) can not detect Prtscr key right after the page is loaded.
Only after you press another key such as "a" or "b", it can detect Prtscr key.
And furthermore, once the window loses the focus, again only after you press another key such as "a" or "b", Microsoft Edge can detect Prtscr key.

This is not happening at all in Google Chrome or Firefox.

KeyCode:

The browser window now loses the focus. So any browser can not detect the keyboard action.
Please click the window and give a focus to the browser window.

Test: Press Prtscr key

The browser window now loses the focus. So any browser can not detect the keyboard action. Please click the window and give a focus to the browser window.

The browser window now loses the focus. So any browser can not detect the keyboard action.
Please click the window and give a focus to the browser window.