EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
EDITING DELEGATE: shouldInsertNode:#document-fragment replacingDOMRange:range from 1 of #text > SPAN > DIV > BODY > HTML > #document to 1 of #text > SPAN > DIV > BODY > HTML > #document givenAction:WebViewInsertActionPasted
EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 1 of #text > SPAN > DIV > BODY > HTML > #document to 1 of #text > SPAN > DIV > BODY > HTML > #document toDOMRange:range from 3 of #text > SPAN > DIV > BODY > HTML > #document to 3 of #text > SPAN > DIV > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 3 of #text > SPAN > DIV > BODY > HTML > #document to 3 of #text > SPAN > DIV > BODY > HTML > #document toDOMRange:range from 4 of #text > SPAN > DIV > BODY > HTML > #document to 4 of #text > SPAN > DIV > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
EDITING DELEGATE: webViewDidEndEditing:WebViewDidEndEditingNotification

You should see aax\tz below:
| "
"
| <span>
|   id="test"
|   "a ax<#selection-caret>"
|   <span>
|     class="Apple-tab-span"
|     style="white-space:pre"
|     "			"
|   "z"
| "
"