When NetworkTopology component gets re-rendered, the vertical lines connecting roles and networks disappear.
Upstream master fix: https://review.openstack.org/#/c/594938/ Stable/rocky backport: https://review.openstack.org/#/c/614169/
Verified. [stack@undercloud-0 ~]$ rpm -qa openstack-tripleo-common openstack-tripleo-common-9.4.1-0.20181012010891.el7ost.noarch
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2019:0446