The Menu-Button is not touch-sensitive anymore. Worked before.
Also on slicknav.com not working, therefore most likely not an integration error.
Ok, I investigated a bit more.
It is really funny.
The click on the burger is not registered anymore. Although the correct link is in place. If I tap very long on the burger, it opens up the window 'open link in new tab' etc. the correct anchor is displayed. I crosstested by changing the href="#" to something else.
so it is not a positioning problem or similar.
As soon as I put in some text for the label, it works. But just on the label, not on the burger-icon.
Astonishing, or better: weird ...
All these findings just concern the Firefox 42 on Android. On chrome and opera on the same devices it works as expected!
I can confirm this problem.
Slicknav desn''t open the menu on Firefox Mobile 42. I can confirm that works with Chrome Mobile 46.
I tested also the demos of your website and they don't work either.
Menu button sizing for Firefox Mobile v42. Fixes #115
Real Firefox Mobile v42 bugfix. Fixes #115
Weird, with Firefox 42.0.2 (Update from 2015-12-02) it started working again, with and without the sizing changes!
So they do no harm, and maybe it is a good idea to keep them in anyway.
Thanks a lot!