New commit detected on ManageIQ/manageiq/gaprindashvili:

https://github.com/ManageIQ/manageiq/commit/afd03d748807cec70df2e7eb10e599499e0ea5d9
commit afd03d748807cec70df2e7eb10e599499e0ea5d9
Author:     Gregg Tanzillo <gtanzill>
AuthorDate: Fri Jun 29 12:46:07 2018 -0400
Commit:     Gregg Tanzillo <gtanzill>
CommitDate: Fri Jun 29 12:46:07 2018 -0400

    Merge pull request #17656 from jrafanie/remove_miq_request_taggable_and_prevent_tag_filtering_on_it

    Remove Request taggable and prevent tag filtering
    (cherry picked from commit b856925614bc8130afaa37accf885b9e94b6d8a6)

    Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1597321

 app/models/miq_request.rb | 2 -
 lib/rbac/filterer.rb | 2 +-
 spec/lib/rbac/filterer_spec.rb | 41 +
 3 files changed, 42 insertions(+), 3 deletions(-)

Please check appliance https://10.8.197.111.
I created a new_group with tag Environment-Production and a user (shveta/redhat) in the same group .
Requests are not visible to the user .
Also if the user creates a catalog item that is also not visible to the user .

This would be expected because the group "new_group" belongs to a sub tenant of the root tenant named "tenant1". However, every request in the system belongs to the root tenant. The tenancy rules for requests are such that a user can only see requests the are owned by his tenant or child tenants of his tenant. That would exclude these requests.

If you move "new_group" to the root tenant all the request should be visible.

requests are visible 
Verified in 5.9.3.4.20180702181921_afd03d7