No, I have been using my own system for it.
I just read inputs in OnKeyDown and fire off my own event which removes the topmost widget from the stack.
I imagine that is same thing common UI does but I can’t figure out how to actually make it work. There is quite a few things in CommonUI that I can’t get to work as advertised, but in most cases the basic idea wasn’t difficult to reimplement on my own with blueprints.