Unreads, badges and notifications
When collapsed threads is enabled, notifications behave differently - see matrix of scenarios and associated outputs here (full spreadsheet of the chart below)
Desktop Notifications and Mobile Push Notifications
When a user receives notifications about a root post - no change to existing flow. Take the user to the channel, scrolled to the root post
When a user receives notifications about a reply post in a thread that is followed, take the user to the thread in the Global Threads context
When a user receives notifications about a reply post in a thread that is not followed, take the user to the thread in the Channel context (RHS)
Channel vs. Threads badges
In summary of the above chart:
When a root post with an @mention is posted in a channel, the mention badge is displayed on the channel, not the Global Threads sidebar item
When a reply post with an @mention is posted, the mention badge is displayed on the Global Threads menu item in the sidebar.
Channels vs. Threads unread state
When a reply is posted on a root post that has a mention, the mention badge stays on the channel that has the root post, BUT the Threads view now displays as bolded with a new unread message in a thread you follow
Permalinks
Permalinks to root posts
No change to existing UX. Permalinks to root posts take users to the channel, scrolled to the highlighted post.
Permalinks to child posts
Clicking on a permalink to a reply post would take the user to the thread in the RHS with the post scrolled to and highlighted. The center channel context does not change in this case.
Marking Channels as unread vs. Marking Threads as unread
Marking a thread as read/unread will NOT have any effect on the Channel’s sidebar state
Opening a channel, marking posts as ‘read' will NOT have any effect on the Threads' sidebar state
Other Implications to existing features (webapp)
Search
Parent posts behave as-is. The ‘Jump’ action in the hover menu opens the parent post in the channel context
Child posts display similarly, but the ‘Jump’ action in the hover menu opens the thread in the RHS scrolled to the child post
Pinned and Flagged posts RHS
Parent posts behave as-is. The ‘Jump’ action in the hover menu opens the parent post in the channel context
Child posts display similarly, but the ‘Jump’ action in the hover menu opens the thread in the RHS scrolled to the child post
Compact Mode
Displays as-is, but shows the new Thread Footer below the post content
Other Implications to existing features (mobile app)
Search
Tapping on a search result goes to the Single Thread View (rather than opening it up in a modal) with the clicked message in view
Pinned and Flagged Views
Tapping on an item goes to the Single Thread View with the tapped message in view