There is an error in XForms Editor with date fields: dojo.date.format: invalid pattern : jj.nn.aaaa. The workaround is to add next lines in the beginning of the file <alf_home>\tomcat\webapps\alfresco\scripts\ajax\xforms.js in constants section.
//begin romanian locale workaround if (alfresco.xforms.constants.DATE_FORMAT == 'jj.nn.aaaa') { alfresco.xforms.constants.DATE_FORMAT = 'M/d/yy' } if (alfresco.xforms.constants.TIME_FORMAT == 'HH:mm'){ alfresco.xforms.constants.TIME_FORMAT = 'h:mm a' } if (alfresco.xforms.constants.DATE_TIME_FORMAT == 'jj.nn.aaaa HH:mm') { alfresco.xforms.constants.DATE_TIME_FORMAT = 'M/d/yy h:mm a' } //end romanian locale workaround