As I just wanted to report another bug, I followed https://community.limesurvey.org/bug-tracker/ which says:

Please note that to be able to report bugs you have to register a user account on limesurvey.org first and you can use that account to login to the bug tracker.

However, the link at "register" goes to https://account.limesurvey.org/sign-up?utm_source=community.limesurvey.org&utm_medium=Bug%20Tracker&utm_campaign=section-1&utm_content=text_register which creates an LimeSurvey account which is not able to be used at this very bug tracker.

However, on the bug tracker's login page https://bugs.limesurvey.org/login_page.php there is a create account button which actually works.

When following the documented steps, one ends up with an account (with an enabled newsletter subscription) which cannot be used to report bugs. This is a bit frustrating.