Linux 2002042008: Open mozilla, click on the mail icon in the bottom left hand corner, mail opens, close the mail window, click the mail icon a second time and no response consistently. Temporary solution is to restart mozilla completely and reenter mail/news.
Reporter: Do you use a third party Theme ?
You suspected correctly. I was using Pinball. Switching back to the Classic theme resolved the entire issue. I didn't think the look could affect a button's functionality. Thank you.
A recent change broken thirdparty themes. You will need to wait until a new version of the themes is available. *** This bug has been marked as a duplicate of 138239 ***