I wanted to write about that but saw it was raised already
In short when you have custom fields that are required they show with asterisk, but the main fields e.g. email, username… don’t have it although they are also required, which is a bit confusing.
I have a pull request for this ready for review here:
This may not be merged for a week or two because we’re preparing for our next major release and changes that aren’t immediately necessary are on hold.
I’ll update when this topic when it’s been merged.
The above change has been merged in, so you’ll see the fields marked as required the next time your site is updated.