1) As a sysadmin create a team scheme that removes the permission to post reactions for members. Save it without associated a team to the scheme.
2) Observe that a member of that team can still post reactions in a channel.
3) Associate the team scheme to the team.
Actual: Channel members in the team can still use reactions.
Expected: They cannot use reactions as per the team scheme.
Note: refreshing the browser fixes the issue, therefore it's a WS bug.