function disableBackspaceIntoATable() {
			editor.on('keydown', function(e) {
				if (!isDefaultPrevented(e) && e.keyCode === BACKSPACE) {
					if (selection.isCollapsed() && selection.getRng(true).startOffset === 0) {
						var previousSibling = selection.getNode().previousSibling;
						if (previousSibling && previousSibling.nodeName && previousSibling.nodeName.toLowerCase() === "table") {
							e.preventDefault();
							return false;
						}
					}
				}
			});
		}
Backspacing into a table behaves differently depending upon browser type.
Therefore, disable Backspace when cursor immediately follows a table.