“Mark as Solution” button missing from group messages

[tobiaseigen]

Are you saying it used to work for you in group personal messages? I have not seen that before and thought it was not possible, as per this other topic:

Feature request: use solved plugin in group PM inbox

Hello, we love the solved plugin. Is there a way to add the solved yes/no filter to groups? We are using the groups (with email) for supprt ticketing like discourse (How Does Team Discourse Use Discourse?) so it would be wounderful to filter for unsolved tickets in group inbox.