So I think the underlying issue is from https://github.com/silverstripe/silverstripe-tagfield/issues/252 but just so there is a record here too - the tagfield loses its value on blur so it is not possible to use it from the the elemental area inline editor
So I think the underlying issue is from https://github.com/silverstripe/silverstripe-tagfield/issues/252 but just so there is a record here too - the tagfield loses its value on blur so it is not possible to use it from the the elemental area inline editor