I am using main branch, so v1.5.0 beta 5. Captcha is failing. I think it is getting regenerated after I press the login button but before the check occurs, so the phrases never match. It might be a timing thing so it may work on some servers depending on the environment.
A second annoying bug is that CSRF check is enabled by default causing a new install to fail when I am just accessing by HTTP on the IP, so the UI doesn’t work. That should probably be disabled by default. Only enabled once the server is no longer in development mode.
Took me quite awhile to figure out these two problems compounding each other.