User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:184.108.40.206) Gecko/2008070208 Firefox/3.0.1 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:220.127.116.11) Gecko/2008070208 Firefox/3.0.1 Hitting Ctrl+Z in any field of the bookmark properties dialog clears that field when no prior action has been taken. Reproducible: Always Steps to Reproduce: 1. From the Bookmarks menu, right-click on any bookmark and click properties. 2. Press Ctrl+Z. Actual Results: The field is cleared, even though it was in its initial state. Pressing Ctrl+Z again does nothing Expected Results: Nothing should happen when the field is in its initial state. It is possible to restore the original contents of the field by pressing Ctrl+Y (redo).