alt+tab has stopped working

Wendy Walker

In recent days this key combination has not worked as it did a week
ago. I used to be able to hold down the ALT key then press the TAB key
multiple times while never letting the ALT key up to scroll through
multiple windows/programs. Now I can only go back and forth through
two programs. If I want to go to something else I have open I have to
go to my task bar and select it. I am running JAWS 2021 and Windows 10
20 h2. Any thoughts on what might have caused this?