Yup, that's works for me!

I missed you update here. To be fair, the issue is stated, but I do think it's Firefox at fault. The issue happens when you use a self signed cert. I've tested by putting the traffic through a host with a properly signed cert and it works. I can pm you two test addresses if you like? Edit: I'll try ...

Doing some further digging. It's looks like some bug between Python2/TwistedWeb and firefox. The 4.2.2 ext-all.js won't work with deluge, but it won't fix the issue either. I'm placing the file /usr/lib/python2.7/site-packages/deluge/ui/web/js and serving it from there. It exhibits the same behaviou...

I've the same issue. You'll probably find Chrome on Android won't load the page also.
Even requesting ext-all.js directly in Firfox, it won't finish loading.