Hi AndyFel,
We can reproduce this. I've logged it. And will report to our development team. Once issue is resolved, I will keep you posted.
For now you can try the html filter solution below
Add the html filter below to the bottom of your editor page. The red part change it to yours
<script type="text/javascript">
function CuteEditor_FilterHTML(editor,code)
{
return code.split("url(http://localhost:14980/Editor/%22").join("url(");
}
function CuteEditor_FilterCode(editor,code)
{
return code.split("url(http://localhost:14980/Editor/%22").join("url(");
}
</script>
Regards,
Ken