Custom JSP tags is not something we support. Therefore, I am not sure how could I assist you on that.
Resizing of tables inside Kendo Editor is not a feature of the widget. Some browser support that and some do not. I am not sure how this CSS results to a resizing feature. Typically, Firefox and IE have their own feature for image and table resizing. However, Kendo Editor cannot somehow control it. As I am aware, Chrome does not expose such a feature. Therefore, I can only guess how this CSS is relevant to the case.
Navigating with Tab key is not something that is supported. I suggest you posting it as a feature request in the Kendo UserVoice portal.
Hyperlinks are not operation in the content area. That is by design (in the browser) and this is how every editable DOM element
works. You can try creating a simple editable DIV element in a simple page and you will see that the same will happen—links will not direct to the page assigned to. Mainly, this is an editable area. Thus, it is expected links to not navigate to different page. If they are to navigate, any content added in the element will be lost.
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