No matter what I do, I cannot reproduce this problem in neither latest CFME 5.7 (same version as yours), not in ManageIQ Euwe, not in latest ManageIQ master. Would you have an appliance showing this behavior handy?
https://github.com/ManageIQ/manageiq/pull/15484
New commit detected on ManageIQ/manageiq/euwe: https://github.com/ManageIQ/manageiq/commit/76a0875006efafa0ca9cac60b97682a648a58ae6 commit 76a0875006efafa0ca9cac60b97682a648a58ae6 Author: Milan Zazrivec <mzazrivec> AuthorDate: Fri Jun 30 14:21:51 2017 +0200 Commit: Milan Zazrivec <mzazrivec> CommitDate: Fri Jun 30 14:21:51 2017 +0200 Add human understandable string for Amazon Network Manager model https://bugzilla.redhat.com/show_bug.cgi?id=1462104 locale/en.yml | 1 + 1 file changed, 1 insertion(+)
Verified in 5.7.4.0
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/RHSA-2017:3484