If the UI Gallery checkbox is displaying correctly, that clearly indicates there is some code or customization specifically in your application. If it replicated on the UI gallery checbox as well, then we could safely say the issue is with the environment.
You might want to re check areas such as userworkform, style sheets, or control override, whether you have written any custom styles to display it as a switch.
Hope that helps.
Posted: 3 years ago
Posted: 4 Mar 2019 22:19 EST
Rachit Agarwal (Rachit_Agarwal)
Principal Engineer, Technical Support