A new version of kbin is live, causing slight changes in KES functionality that are being patched as they are reported.
Two such updates recently took place:
Hotfix 2.2.4: The appearance of sliders used to toggle on/off settings in KES was reverting to a default checkbox style appearance due to changes in kbin. This has been fixed.
Hotfix 2.2.3: The kbin federation awareness mod was no longer displaying federation status bubbles for articles. This has been fixed.
Version 3.0.0 is slated for release next week and will contain some stability changes to the API and build systems, as well as a major user-facing feature that allows for saving/restoring KES settings into a backup file.
Thank you!