User is able to add work notes, comments and attachments on the Activity Stream on Agent Mobile App even when Incident is already closedDescriptionBuild information:Build name: MadridBuild date: 07-29-2019_1528Build tag: glide-madrid-12-18-2018__patch6-07-24-2019Issue Description:User is able to add work notes, comments and attachments on the Activity Stream on Agent Mobile App even when Incident is already closedSteps to Reproduce Activate the Plugin "ITSM Mobile"1. Log in as admin to the platform.2. Click to open Studio and select "ITSM Mobile" Application.3. Create a list screen Applet "Closed Incidents" with "Activity Stream".4. Create Data Item "Closed Incidents"Table: incidentCondition type: DeclarativeQuery condition: State is closed.5. Log in via Agent Mobile App.6. Navigate to the "Closed Incidents" Applet.7. Click to open a closed incident.8. Switch to "Activity Stream"9. Click the "+" button.Expected behaviorUser should be able to add work notes, comments and attachments to this closed incident.Actual behaviorUser can add work notes, comments and attachments to this closed incident.Investigation Summary:1. All menus in "+" button are OOB and not configurable.https://docs.servicenow.com/csh?topicname=mobile-experience.html&version=latest2. This issue can also be reproduced using 'change_request' table.Actually, it should be reproducible for all tables extend the task table including the task table.3. Can use before update/insert Bussines Rules to block updating to an' incident' table record or inserting to a 'sys_attachment' table record.WorkaroundThis issue is under review. To receive notifications when more information is available, subscribe to this Known Error article by clicking the Subscribe button at the top right of the article. If you are able to upgrade, review the Fixed In field to determine whether any versions have a permanent fix.Related Problem: PRB1356495