Multiselect fields are sometimes autofilled by the browser, making it seem that a given configuration state has been saved, when in fact it hasn't.
Related Gerrit Patches:
|mediawiki/extensions/CentralNotice : master||Admin UI: Disable autocomplete on multiselects and all campaign detail|
|Open||None||T172024 EPIC: CentralNotice: Tracking: Issues related to old JS widgets in Admin UI|
|Resolved||AndyRussG||T185816 CentralNotice: Prevent autofill of multiple selection fields by browsers|