The code in question being in my common.js here (and on some other wikis) : https://en.wikipedia.org/wiki/User:ShakespeareFan00/common.js (currently commented)
Sequence of actions taken (with script code active):
- Log into a a wiki with SUL, where the enforcer script is not active.
- Navigate from that wiki back to English Wikipedia, or via a link in a search engine.
- Wait for the enforcer script to generate it's first message.
- Click the acknowledgement in that message.
Enforced Log out on the wiki concerned, and return to the main-page of the wiki in question per the intent of the script.
Log out does not seemingly occur, and an error page about using the UI provided logout page is generated. The script then regenerates the Wiki break enforcement notice. Acknowledging it again regenerates the error page and the enforcement notice in an apparently un-ending repeating cycle.