30 votesLaura Walker commented
I also agree that this is a really confusing UX choice. I assumed that the trash icon would delete the post.
Multi-window chat is in testing. I hope to have great news regarding rollout to the public rings soon.
We are working to ensure that multi-window and other future multi-window experiences are of the highest quality when they release.
You can make these edits using a cmdlet, please see the documentation at https://docs.microsoft.com/en-us/powershell/module/exchange/users-and-groups/Set-UnifiedGroup?view=exchange-ps
This should help you make the edits requested in this topic.