Doing @mention / wipes out contents in Activity Stream plain text composeDescriptionDoing @mention / wipes out contents in Activity Stream plain text composeSteps to Reproduce Open an incident record in Agent Workspace.In Activity Stream compose, ensure that the plain text editor is enabled.Enter '@Beth' and select Beth Anglin.Press the '/' key. Notice that the composer is cleared when you press the '/' key.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 or Intended Fix Version fields to determine whether any versions have a planned or permanent fix.Related Problem: PRB1489743