Symptoms
Manage Form Settings window styling is corrupted.
Diagnoses
Rare issue that can occur post-upgrade.
Resolution
Likely a cache mismatch. Recommended clearing the server-side cache via the following URLs:
https://[yourAppitKUID].appit.com/Runtime/CacheControl.ashx?m=Clear
https://[yourAppitKUID].appit.com/Designer/CacheControl.ashx?m=Clear
Client reported that after an outage the form is now working correctly.