This is really poor behaviour. We almost went with Quill as they offer a great message threading model - one of the few in the space to do so, along with Zulip

This is really poor behaviour. We almost went with Quill as they offer a great message threading model - one of the few in the space to do so, along with Zulip (which is open source). Thankfully, we did not. Feel very sorry for sysadmins who have to drop everything and handle this in the run-up to Christmas.