When trying to align selected text in a table, not all cells are being aligned correctly under IE and Chrome. In Firefox only one table cell is being applied with the chosen modification and not the selected text.  

Under IE and Chrome, when a table row element is in the selection, the child td elements are not processed by the Align command.

Under FF when the table text is selected, the selected element is only the first TD element. 

The problem under IE and Chrome could be resolved using the following override of the executeOnNode():

<telerik:RadEditor runat="server" ID="RadEditor1">
</telerik:RadEditor>

<script type="text/javascript">
	Telerik.Web.UI.Editor.AlignCommand.prototype.executeOnNode = function (node) {
		var utils = Telerik.Web.UI.Editor.Utils;

		if (utils.isTag(node, "table"))
			return;//prevent alignment of tables since this has no effect in browsers.

		if (utils.isTag(node, "tr")) {
			var nodes = node.childNodes;
			var nodeArr = [];

			for (var i = 0; i < nodes.length; i++) {
				nodeArr.push(nodes[i]);
			}

			while (nodeArr.length) {
				var childNode = nodeArr.shift();
				if (this.isSuitableNode(childNode))
					this.executeOnNode(childNode);
				else
					this.executeInlineNode(childNode);
			}

			return;
		}

		if (utils.isTag(node, "ul") || utils.isTag(node, "ol"))
			return this.executeDomCommand($.makeArray(node.children));

		if (utils.isTag(node, "img")) {
			if (this.nodes.length == 0 && this.canAlignImage()) {
				if (this.options.align == "none")
					this.alignBlock(this.getBlockContainer(node));

				return this.alignImage(node);
			}
			else {
				this.removeImageAlign(node);

				var imageContainer = this.getBlockContainer(node);
				if (imageContainer != node)
					this.executeOnNode(imageContainer);
				else
					return this.executeInlineNode(node);
			}
		}

		this.alignBlock(node);
	};
</script>