Posting replies

Is anyone having issues posting replies in Firefox? I enabled JavaScript from both vpsboard.com and also "voat.com" but it just changes the "Answer to this question" to a blank uneditable box with "Insert other media" on the right hand side.

Edit: it seems to only be broken when I disable user-agent. Why is user-agent necessary for the forum to work?

I don't know whether 'user-agent' is related with this (I haven't done anything with it on opera), but opera 12 on Linux has the same issue. When you click "Reply to this topic", you won't have editing area any more (probably opera latest version wouldn't have this issue). But there is no problem with Chromium (open source version/father of Chrome).