Merge pull request #20995 from owncloud/fix-18734

ensure multiselect always receives an array when setting its value, f…

apps/user_ldap/js/wizard/wizardTabGeneric.js

@@ -198,9 +198,13 @@ OCA = OCA || {};
 				return;
 			}
 
-			// deal with text area
+			// special cases: deal with text area and multiselect
 			if ($element.is('textarea') && $.isArray(value)) {
 				value = value.join("\n");
+			} else if($element.hasClass(this.multiSelectPluginClass)) {
+				if(!_.isArray(value)) {
+					value = value.split("\n");
+				}
 			}
 
 			if ($element.is('span')) {