The Slack integration for Bitbucket Cloud is tagging ~50% of our users with usernames that don't match their actual Slack usernames, resulting in those users not being alerted when new PRs are submitted/approved. Clicking on the link that should tag them redirects to a 'workspace' with a name of their username, like the below:
Overview — Bitbucket
Is there something the users who aren't properly tagged need to do in order to fix tagging for their accounts?