The date option "ISO 8601" has a blank, so the id for this option on [[Special:Preferences]] is illegal.
Version: unspecified
Severity: enhancement
The date option "ISO 8601" has a blank, so the id for this option on [[Special:Preferences]] is illegal.
Version: unspecified
Severity: enhancement
Fixed in r53480; now running the generated IDs for radio group items through Sanitizer::escapeId().