If installed, recommend Thread reply ban teeth 2.9.3+ to avoid unexpected interactions with banned users and collaboration feature
Fix 'can warn' permission did not function as expected for moderators who where collaborators, most noticeable when the "always collaborate" permission is granted
Fix deleting own posts in a collaborative thread could fail
Fix thread collaboration didn't work for threads started by deleted/guest users
Do not leak a thread exists if collaboration isn't permitted for threads/collaborate route
Rework "Permissions requiring explicit sharing" to always apply to known per-thread aspected permissions, these permissions are not selectable/deselectable from this option
Setup specific addons permission sharing defaults when they are installed, recommend using "reset to defaults" on the "Shared permissions" option
Add "reset to defaults" option for Shared permissions/Permissions requiring explicit sharing
Add warning banner to thread collaboration page for a thread when the thread creator is in a state which could result in unexpected lose of functionality
Fix determing the maximum allowed collaborators in a thread was repeatedly computed
Fix Vote Tally support, where a collaborator not being able to close their own scheduled votes
Thread collaboration management page changes
Allow collaborators to see the thread collaboration page
Allow thread starter to view the collaboration page if they can not start a collaborative thread but they are participating in a collaborative thread with other collaborators
Correctly display if no more users can be added to a collaborative thread