Wunderkit won't collaborate with workspace collaborators

UPDATE:  It seems that my colleague was NOT accepting the invite.  Instead, he was clicking on the icon of the workspace, and when the workspace appeared on his screen, he was clicking "follow".  Apparently the check mark and the X by which we accept or reject an invite to a workspace is not intuitive for all....

Solution:  Wunderkit support got back to me the next day and the situation was resolved.  Great support!

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Just trying out Wunderkit:  I already have a pile of workspaces set up.  Thing is, I invite my colleague to one of my workspaces, and he accepts the invite, but the "Manage workspace members" tab in the dashboard just won't update.  As a result, I can't make him an admin, and thus he doesn't get full access to tasks and notes in that workspace.  Wunderkit looks wonderful, but it's obvious that it's still very much in beta.

Problem:  Collaborators who accept an invitation to a workspace are not updated in the "Manage workspace members" list, and thus cannot be given admin privileges.  This essentially makes Wunderkit useless as a collaboration tool.

Solution:  File a bug report with Wunderkit and hope they'll get to fixing it soon.