I appear to have found an issue with Adblock Browser for iOS and some (possibly all) forums running on Xenforo: It's impossible to compose posts because the composer box can't be clicked into. I can do it in Safari even with ABP running, while I can't do it in ABB even with ad blocking disabled, so it's not the ad blocker causing it.
In Safari, the composer box shows a formatting toolbar, and I can click into the box and type. On Adblock Browser, the box is totally empty, and clicking into it does nothing. This problem occurs both for new posts, and the quick-reply box at the bottom of existing threads.
I'm on an iPhone 5s, iOS 9.2.1. Is anybody else experiencing this? Can this issue be investigated?