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 When using DOM inspector on a chrome URL to change styles, the rule often disappears and the browser subsequently crashes. This happens when changing the style of just about any object. The crash problem did not happen in FireFox 0.9.3. I also tested this in Mozilla 1.7 (using navigator.xul) and, although the rule disappeared, the browser never crashed and the rule seemed to be applied most of the time (which is why I didn't put this under the "Browser" product). I thought about marking this critical, since it crashes the browser. However, I can't tell if the problem is caused by a faulty DOM Inspector, or a bug in FireFox that just happens to be triggered by DOM Inspector. In the past, the DOM inspector has been invaluable at finding where to make style changes on the fly. This is not possible anymore. Reproducible: Always Steps to Reproduce: 1. Open DOM Inspector 2. Choose chrome://browser/content/browser.xul and click Inspect 3. Find the node "toolbarbutton" with and id of "back-button". (Should be in #document->window->toolbox->toolbar->toolbarbutton) 4. On the upper-right, select "CSS Style Rules" 5. Selct the rule ".toolbarbutton-1" 6. Right-click on the "min-width" property in the lower right and choose edit 7. Set min-width to 1px 8. Click OK 9. Entire rule disappears -- this shouldn't happen, but is more a DOM inspector problem and should be filed as a separate bug. 10. Now close the DOM inspector and go to the main window and hover the mouse over the back (<) button. 11. Browser crashes Actual Results: Rule not applied right and browser crashes Expected Results: Rule applied and browser does not crash Usually get an exception accessing referenced memory at 00000000 or 00000001 and the talkback program starts. I have sent a few reports in.
please try a recent build from http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-trunk/ and if still crashes, submit a talkback report and post its id here.
I can confirm this happens on Firefox 1.0.1 UA string Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.6) Gecko/20050225 Firefox/1.0.1 StumbleUpon/1.9993 I was following his steps to reproduce as discussed in #bs, although the node I inspected was olAttrBody. When switching to view stylesheet rules instead of DOM nodes, Firefox crashes. Talkback ID is TB4515853H
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8b2) Gecko/20050321 Firefox/1.0+ Latest nightly, bug doesn't occur.