HTML that was created with JavaScript and edited using the JavaScript style property will not change after being edited a second time. For the url, click on the Log In link in the red sidebar, the click the link again. You should notice that the second time, several elements are not visible. The alert tells you the opacity of one of the nodes. You may find the node in the web inspector by typing "meNameBox" in the Web Inspector search box.
Created attachment 8046 [details] Bug in Action First box shows first click on the link, second box shows the effect after clicking the second time. The alert box is the same both times. The web inspector says that the opacity is 1 the first time, and 0 the second time.
Note: The opacity value appears in the status bar instead of an alert.
Dimitri, the URL provided does not seem to be accessible at present. Can you please attach the problematic page to this bug report?
Created attachment 11634 [details] works for me I have tried to re-create the problem, but my tests worked as expected.
The bug URL is still inaccessible, so closing as INVALID. Please re-open with a reproducible test.