Enabling module causes un-themed text format edit admin page

Problem/Motivation

Installing this module with the directions from #2 causes the admin page for editing a text filter and changing out the ckeditor buttons to become unthemed entirely (no CSS) and this is the response in the console:

GET https://website.com/sites/default/files/css/css_v1yTuvaedP74CFmKyE7rqXIs... net::ERR_ABORTED 418 (I'm a teapot)

Disabling CSS caching fixes the issue.
Disabling this module fixes the issue.

With CSS caching disabled, I can add the anchor, re-enable css caching and go about my life fine with Ckeditor.

Steps to reproduce

Drupal 11.1.0
anchor_link 3.0-beta1
Make sure CSS Caching is on in performance (/admin/config/development/performance)
Edit a text format with CKeditor at admin/config/content/formats that has Ckeditor5

Proposed resolution

(TBD)

Remaining tasks

(TBD)

API changes

(TBD)

Data model changes

(TBD)

Release notes snippet

(TBD)