diff --git a/js/layouts/tab-container/tab-container.js b/js/layouts/tab-container/tab-container.js
index 1168c70fb..81761e274 100644
--- a/js/layouts/tab-container/tab-container.js
+++ b/js/layouts/tab-container/tab-container.js
@@ -47,34 +47,35 @@ $(function()
 	            var me = this;
 	            this.element.addClass(this.css_classes.tab_container);
 
-                // Ugly patch for a change in the behavior of jQuery UI:
-                // Before jQuery UI 1.9, tabs were always considered as "local" (opposed to Ajax)
-                // when their href was beginning by #. Starting with 1.9, a <base> tag in the page
-                // is taken into account and causes "local" tabs to be considered as Ajax
-                // unless their URL is equal to the URL of the page...
-                if ($('base').length > 0) {
-                    this.element.find(this.js_selectors.tab_toggler).each(function () {
-                        const sHash = location.hash;
-                        const sCleanLocation = location.href.toString().replace(sHash, '').replace(/#$/, '');
-                        $(this).attr('href', sCleanLocation + $(this).attr('href'));
-                    });
-                }
+	            // Ugly patch for a change in the behavior of jQuery UI:
+	            // Before jQuery UI 1.9, tabs were always considered as "local" (opposed to Ajax)
+	            // when their href was beginning by #. Starting with 1.9, a <base> tag in the page
+	            // is taken into account and causes "local" tabs to be considered as Ajax
+	            // unless their URL is equal to the URL of the page...
+	            if ($('base').length > 0) {
+		            this.element.find(this.js_selectors.tab_toggler).each(function () {
+			            const sHash = location.hash;
+			            const sCleanLocation = location.href.toString().replace(sHash, '').replace(/#$/, '');
+			            $(this).attr('href', sCleanLocation+$(this).attr('href'));
+		            });
+	            }
 
-                if ($.bbq) {
-                    // This selector will be reused when selecting actual tab widget A elements.
-                    const sTabAnchorSelector = 'ul.ui-tabs-nav a';
+	            let oTabsParams = {
+		            classes: {
+			            'ui-tabs-panel': 'ibo-tab-container--tab-container',    // For ajax tabs, so their containers have the right CSS classes
+		            }
+	            };
+	            if ($.bbq) {
+		            // Enable tabs on all tab widgets. The `event` property must be overridden so
+		            // that the tabs aren't changed on click, and any custom event name can be
+		            // specified. Note that if you define a callback for the 'select' event, it
+		            // will be executed for the selected tab whenever the hash changes.
+		            oTabsParams['event'] = 'change';
+	            }
+	            this._addTabsWidget(oTabsParams);
 
-                    // Enable tabs on all tab widgets. The `event` property must be overridden so
-                    // that the tabs aren't changed on click, and any custom event name can be
-                    // specified. Note that if you define a callback for the 'select' event, it
-                    // will be executed for the selected tab whenever the hash changes.
-                    this._addTabsWidget({event: 'change'});
-                } else {
-                    this._addTabsWidget();
-                }
 
-	         
-                this._bindEvents();
+	            this._bindEvents();
             },
 	        _addTabsWidget: function(aParams)
 	        {