I have a GroupFocus for search results.
If you type in the search bar it shows a RG in a GroupFocus of the results.
However, if you click away the Group Focus hides (as expected), but then if you start typing in the search bar again the Group Focus does not reappear.
I have the logic from this tutorial via @SerPounce and @romanmg : GroupFocus with Show Focus not working - #3 by SerPounce
Logic - if Input Box is focused AND Input Box value is not empty - make Shape A visible
If Shape A visible - show GroupFocus.