We are using SSL with setting JENKINS_HTTPS_PORT="8080".
Since we've upgraded from Jenkins 2.263.4 to Jenkins 2.277.1
after a login under https://jenkins.adress:8080 the page is redirected to https://jenkins.adress:8443 and we get a connection failed of course.
If we change this adress in the browser to 8080 manualy afterwards it leads to the right port.
Seems that Spring Security (JEP-227) redirects automatically to 8443 when SSL is enabled and https_port is 8080. The former Acegi security does not.

Any other port (e.g. 8090) is not redirected to 8443.
We would like to stay on 8080.