OS: MacOSX 10.9.1
Broken Browser: Firefox 26.0 (and prior versions)
Working Browsers: Chrome 33.0.1750.29 beta and Safari Version 7.0.1 (9537.73.11)
Machines: two different machines, Late 2013 Mac Book Air 11" maxed out, and Late 2013 Mac Book Pro 13" maxed out.
When I see an article I’d like to share, I press SHIFT-S, now that the Share Comment Box Automatic Focus Problem has been fixed, I just type my comment. The SHARE button in the green box does not work though. It also doesn’t change to SHARE WITH COMMENT like it does on the working browsers. After I type my comment if I click it nothing happens except the Share Comment Box loses focus. I can click a second time and still nothing happens. I have to actually click back in the Share Comment Box and do a CMD-ENTER (on MacOSX, assume ALT-ENTER on Windows).
I usually don’t use my mouse, and this is not really a problem for me. Sometimes though I do try and click it and it doesn’t work. I’m sure for other folks, they can’t figure out how to make it work at all in Firefox.