IE 8 : error when handling Wicket Ajax Response

I have a problem with Wicket 6.2.0/6.3.0 and IE (this works perfectly with Chrome or Firefox). I have a list of items, with Ajax links in the list. The response to the Ajax link modifies a panel from the page, and redraws the list (its container).

IE does at least some of the changes correctly, but outputs an error, and it seems that subsequent Ajax request fail:

(... some UI code ...)
(... Jquery and Wicket ajax references ...)
<script type="text/javascript" id="wicket-ajax-base-url">
/<![CDATA[/
Wicket.Ajax.baseUrl="other/bictables/list";
/]^]>/
</script>
</head>]]></header-contribution><evaluate><![CDATA[Wicket.Ajax.ajax(

{"u":"./list?3-1.IBehaviorListener.0-interaction-view-toolbar-AMEND","e":"click","c":"AMENDea"}

);]]></evaluate><evaluate><![CDATA[Wicket.Ajax.ajax(

{"u":"./list?3-1.IBehaviorListener.0-interaction-view-toolbar-RETURN","e":"click","c":"RETURNec"}

);]]></evaluate><evaluate><![CDATA[Wicket.Ajax.ajax(

{"u":"./list?3-1.IBehaviorListener.0-entities-entitiesList-bictables-0-actions-view","e":"click","c":"viewf2"}

);]]></evaluate><evaluate><![CDATA[Wicket.Ajax.ajax(

{"u":"./list?3-1.IBehaviorListener.0-entities-entitiesList-bictables-0-actions-edit","e":"click","c":"editf3"}

);]]></evaluate><evaluate><![CDATA[Wicket.Ajax.ajax(

{"u":"./list?3-1.IBehaviorListener.0-entities-entitiesList-bictables-0-reorder-down","e":"click","c":"downf4"}

);]]></evaluate><evaluate><![CDATA[Wicket.Ajax.ajax(

{"u":"./list?3-1.IBehaviorListener.0-entities-entitiesList-bictables-1-actions-view","e":"click","c":"viewf5"}

);]]></evaluate><evaluate><![CDATA[Wicket.Ajax.ajax(

{"u":"./list?3-1.IBehaviorListener.0-entities-entitiesList-bictables-1-actions-edit","e":"click","c":"editf6"}

);]]></evaluate><evaluate><![CDATA[Wicket.Ajax.ajax(

{"u":"./list?3-1.IBehaviorListener.0-entities-entitiesList-bictables-1-reorder-up","e":"click","c":"upf7"}

);]]></evaluate><evaluate><![CDATA[Wicket.Ajax.ajax(

{"u":"./list?3-1.IBehaviorListener.0-entities-entitiesList-bictables-1-reorder-down","e":"click","c":"downf8"}

);]]></evaluate><evaluate><![CDATA[Wicket.Ajax.ajax(

{"u":"./list?3-1.IBehaviorListener.0-entities-entitiesList-bictables-2-actions-view","e":"click","c":"viewf9"}

);]]></evaluate><evaluate><![CDATA[Wicket.Ajax.ajax(

{"u":"./list?3-1.IBehaviorListener.0-entities-entitiesList-bictables-2-actions-edit","e":"click","c":"editfa"}

);]]>
(... lots of similar code from the table ...)
<evaluate><![CDATA[Wicket.Ajax.ajax(

{"u":"./list?3-1.IBehaviorListener.0-entities-entitiesList-bictables-17-actions-edit","e":"click","c":"edit136"}

);]]></evaluate><evaluate><![CDATA[Wicket.Ajax.ajax(

{"u":"./list?3-1.IBehaviorListener.0-entities-entitiesList-bictables-17-reorder-up","e":"click","c":"up137"}

);]]></evaluate></ajax-response>
INFO: returned focused element: http://localhost:8080/payments/app/other/bictables/list?3#
INFO: returned focused element: null
ERROR: Wicket.Ajax.Call.processEvaluation: Exception evaluating javascript: [object Error], text: Wicket.Ajax.ajax(

{"u":"./list?3-1.IBehaviorListener.0-entities-entitiesList-bictables-7-actions-view","e":"click","c":"view10d"}

);
ERROR: FunctionsExecuter.processNext: [object Error]
ERROR: Wicket.Ajax.Call.processEvaluation: Exception evaluating javascript: [object Error], text: Wicket.Ajax.ajax(

{"u":"./list?2-4.IBehaviorListener.0-entities-entitiesList-bictables-7-actions- view","e":"click","c":"view2cb"}

);
ERROR: FunctionsExecuter.processNext: [object Error]

all subsequent Ajax requests lead to :

INFO: Channel '0' is busy - scheduling the callback to be executed when the previous request finish

Is this a bug in Wicket, in IE? Any way to circumvent it if it's in IE?