Controlled vocabulary selector in EditMOM3 does not display anything in FF 67.0

Created by: GVogeler

When user In EditMOM3 mark up a "keyword" <cei:index> (e.g. in <cei:abstract>, change the attribute settings to "Use Controlled Vocabulary = yes" and add @indexName, the attribute indexName should display a selection list from metadata.ControlledVocabulary.public//skos:ConceptScheme/skos:prefLabel. Currently the selection list is empty. JavaScript console does not show any error. Probably involved files are : https://github.com/icaruseu/mom-ca/blob/7dd04dae376763aa32d15eaca107c1496b79212e/my/XRX/src/mom/app/collection/service/editMomgetControlledVoc.service.xml, https://github.com/icaruseu/mom-ca/blob/7dd04dae376763aa32d15eaca107c1496b79212e/my/XRX/src/core/app/xrx/js/jquery.ui.xrxAttributes.js#L246 and maybe https://github.com/icaruseu/mom-ca/blob/7dd04dae376763aa32d15eaca107c1496b79212e/my/XRX/src/mom/app/collection/js/jquery.ui.xrxAttributes.js