Workflow Transition Dialog not marked as dirty

Opening a workflow transition dialog, adding a massive amount of text in the comments and then hitting escape loses all your information, without warning.

Secondly, adding comments into the comment box, then opening a workflow transition dialog and closing it (either right away or after it's loaded, doesn't matter) will close the comment box too - but it will still preserve the text in the comment box. The page will not be marked as dirty however.