It was possible to log into the Check_MK GUI interactively (using the login form)
as automation user. This was never intended and was a bug.
Automation users are only meant to authenticate with the GUI for a single page or API
call using the URL variables (_username and _secret).
In case you want to login interactively to access multiple pages, you need a "normal"
user that has a password configured instead of an automation secret.
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