Documentation. We add a link to Confluence page to a Jira ticket. And we add a link to Jira ticket to a Confluence page.
Closed tickets estimation. If by the end of a sprint ticket is resolved but not estimated - a person who worked on a ticket should estimate it by himself.
Long discussions should be moderated. If the discussion continues for more than 5 minutes we should stop. And check should we continue, postpone, or have a discussion in a limited group.
React to decision in conversations. Everyone should react via chat message or voice. Don't be silent.