app.modal.close() called immediately before showToken()'s app.modal.open()
in the same tick collides with Bootstrap's hide-transition guard on the
singleton modal, so the reveal never appears. open() alone already
overwrites the already-visible modal's content in place. Same root cause
as the OAuth-secret-reveal race fixed in sso-manager-node (v1.8.2) and the
create-token race fixed in proxy (v1.7.0), found while auditing this
exact pattern across all 3 apps this round.