User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050607 Firefox/1.0.4 Build Identifier: Mozilla/5.0 (X11; U; SunOS sun4u; en-US; rv:1.9a1) Gecko/20060522 Minefield/3.0a1 User can not navigate the web page with cursor in caret mode, lots of content can not be accessed with keyboard navigation. Reproducible: Always Steps to Reproduce: 1. Launch firefox and load "http://www.sun.com/". 2. Press F7 to switch caret browsing on. 3. Press Left/Right arrow to navigate this page. Actual Results: Cursor will be blocked at somewhere. Expected Results: User could browse the webpage with cursor in caret browsing mode. This bug can be found on vermillion_41/snv_40 with both Mozilla/5.0 (X11; U; SunOS sun4u; en-US; rv:1.9a1) Gecko/20060522 Minefield/3.0a1 and Mozilla/5.0 (X11; U; SunOS sun4u; en-US; rv:1.8.0.3) Gecko/20060515 Firefox/1.5.0.3.

*** This bug has been marked as a duplicate of 241023 ***