I have a "team" setup with several members.
I use this "team" for email subscriptions and for filtering issues.
One of the members even though accepted the invite and I can see is part of the group:
1/ does not receive the subscriptions
2/ is not including in the issue filter when filtering on the team name
I've tried to remove and re-add them, but it does not fix the problem.
The person is also in an admin role so should have no restrictions