Resized window scrolls off the screen due to window size.
Cause:
A window has moved or resized off-screen.
Solution:
Click on the program button on the Taskbar, or press ALT+TAB on the keyboard.
Do one of the following:
1) Click the program button on the Taskbar.
Taskbar
2) Press and hold ALT, then press TAB until the desired program icon is selected. (The program becomes visible when the buttons are released.)