I recently upgraded to macOS Catalina. I use a setup with Karabiner Elements and Hammerspoon, so I can switch between apps using shortcuts like
My caps-lock is configured to act as a 'Hyper' key when held down, meaning its the same as pressing
command + option + control + shift.
However after Catalina upgrade, whenever I press
caps-lock + W, the screen flashes.
It also happens when I press the keys individually, so
command + control + option + shift + W, so I believe it is some new shortcut introduced in Catalina that does this.
However I can't seem to find what it is and how to disable it, could anybody please help?
The flash is the same as the flash you see when you go to
System Preferences > Accessibility > Audio > Test Screen Flash.