Pre-install the extended choice parameter plugin

$ java -jar jenkins-plugin-manager-2.5.0.jar --plugin extended-choice-parameter -d jenkins-home/plugins/ --war ~/Downloads/jenkins.war

Start Jenkins:

java -jar jenkins.war

Attempt to unlock Jenkins,
When you click continue you will get a server side redirect to http://localhost:8080/static/273c496b/plugin/extended-choice-parameter/css/selectize.bootstrap2.css

instead of the next page of the setup wizard.

The cause is the page decorator here:
https://github.com/jenkinsci/extended-choice-parameter-plugin/blob/master/src/main/resources/com/cwctravel/hudson/plugins/extended_choice_parameter/JSONEditorPageDecorator/header.jelly

I confirmed that by removing all the content from the jelly file and rebuilding and I couldn't reproduce the issue anymore

Either the page decorator should be patched to not cause this issue or it should be filtered to be not included on the setup wizard pages