User who got invitation to join a group is not able to View the messages to his role.

Group Admin invites to user (say. A ) to join his group. That user clicks the invitation link and join that group. He selected 'Contributor/Participant' as his role.
Now the admin creates a message for the role, 'Contributor/Participant' . The user A, can view that message under Recent Group Activity. But if he clicks the link, he gets the message 'You are not allowed to view this document or perform this action.' even if his role is ''Contributor/Participant' .
Also for that user, the corresponding message is not displayed for 'My Role'

(It is noted that in the Edit Settings, the corresponding role selected is not highlighted for that user).

(If the user requested for a membership and got approved, in that case, that user is able to view the message for his role)