The application windows on my 2017 Macbook pro MacOS 10.15 lock up randomly and I don’t know what triggers it. When this happens I can’t switch to a different window in a different desktop using command+tab or view desktops using F3, and launch pad won’t open up (launchpad can only be accessed by two finger clicking the launchpad icon in the bottom application tray). I can only switch between application windows by using control and the arrow keys. The only way to fix this window locking up problem is to reboot the system, although once or twice the windows randomly unlock after a long period of time.
Am I inadvertently pressing a key that locks up operating system windows so that they become unresponsive to keyboard presses?
What is causing application windows to lock up on MacOS 10.15?