User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; rv:1.7.3) Gecko/20040913 Firefox/0.10 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; rv:1.7.3) Gecko/20040913 Firefox/0.10 If I view XML data in tree form and click the middle button, the tree layout disappears and I see the XML data (without tags) just as if it were plaintext data. The only way to get the tree layout back is to reload the page. This only seems tohappen when clicking the mousewheel. Reproducible: Always Steps to Reproduce: 1. Load page in Firefox 2. Click mousewheel button 3. <Problem Happens> Actual Results: I saw the data as plaintext and had to reload to get the tree format back. Expected Results: Shown the autoscroll thingy like it does when viewing an HTML page. I'm using a barebones MS Intellimouse with wheel (ball, not optical)

*** This bug has been marked as a duplicate of 215762 ***